Abstract
This work was carried out during the two successive summer seasons of 2013 and 2014 at a Private Vegetable Farm in El-Khattara distract, Sharkia, Governorate, to investigate the effect of different application methods and concentrations of chitosan ( 0, 0.025, 0.075 and 0.125 %) on growth , yield , tuber roots quality and storability of sweet potato cv. Buregard grown under sandy soil conditions using drip irrigation system. Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosan was the best method for increasing dry weight of shoots, N,P and K uptake by shoots, marketable yield and total yield and also, for decreasing weight loss (%) and decay (%) in tuber roots during storage period. Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period. Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution gave the highest values of vine length , dry weight of shoots/ plant, chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissues, average weight of tuber root, total yield , whereas the same treatment gave the lowest values of weight loss percentage and decay (%) in tuber roots during storage period. On the other hand, the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosan gave the highest values of N,P and K uptake, marketable yield, starch and total sugar contents in tuber roots. Conclusively, from the foregoing results of this study, it could be concluded that, under the same conditions, dipping the base of the stem cutting in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution three times at 15 days intervals beginning 25 days after transplanting gave the best interaction treatment for increasing plant growth, yield and its components, tuber roots quality and storability of sweet potato plants.
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Claims 19
Claim · model-written summary
Combined cutting dip and foliar chitosan was best for increasing shoot dry weight.
- Taxon
- SWEET POTATO PLANTS
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosane0
- Outcome
- dry weight of shootse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosan was the best method for increasing dry weight of shoots, N,P and K uptake by shoots, marketable yield and total yield and also, for decreasing weight loss (%) and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined cutting dip and foliar chitosan was best for increasing shoot N, P and K uptake.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosane0
- Outcome
- N,P and K uptake by shootse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosan was the best method for increasing dry weight of shoots, N,P and K uptake by shoots, marketable yield and total yield and also, for decreasing weight loss (%) and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined cutting dip and foliar chitosan was best for increasing marketable and total yield.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosane0
- Outcome
- marketable yield and total yielde0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosan was the best method for increasing dry weight of shoots, N,P and K uptake by shoots, marketable yield and total yield and also, for decreasing weight loss (%) and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined cutting dip and foliar chitosan was best for reducing stored tuber weight loss and decay.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosane0
- Outcome
- weight loss (%) and decay (%) in tuber rootse0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in chitosan solution before planting + foliar spraying of the plants with chitosan was the best method for increasing dry weight of shoots, N,P and K uptake by shoots, marketable yield and total yield and also, for decreasing weight loss (%) and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.075% increased growth and average tuber weight.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Chitosan solution 0.075 %e0
- Outcome
- growth, average tuber weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.075% increased total yield.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Chitosan solution 0.075 %e0
- Outcome
- total yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.075% increased tuber starch and sugar.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Chitosan solution 0.075 %e0
- Outcome
- starch and total sugar in tuber rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.125% increased leaf chlorophyll a and total chlorophyll.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- chitosan 0.125 %e0
- Outcome
- chlorophyll a, total (a+b) in leaf tissuese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.125% increased shoot N, P and K uptake.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- chitosan 0.125 %e0
- Outcome
- N,P and K uptake by shootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.125% increased marketable yield.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- chitosan 0.125 %e0
- Outcome
- marketable yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Chitosan at 0.125% produced minimum stored tuber weight loss and decay.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- chitosan 0.125 %e0
- Outcome
- weight loss and decay (%) in tuber rootse0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan solution 0.075 % increased growth, average tuber weight , total yield, starch and total sugar in tuber roots, whereas chitosan 0.125 % increased chlorophyll a, total (a+b) in leaf tissues, N,P and K uptake by shoots and marketable yield and also recorded minimum values of weight loss and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.075% chitosan dip and spray produced highest vine length and shoot dry weight.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solutione0
- Outcome
- vine length , dry weight of shoots/ plante0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution gave the highest values of vine length , dry weight of shoots/ plant, chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissues, average weight of tuber root, total yield , whereas the same treatment gave the lowest values of weight loss percentage and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.075% chitosan dip and spray produced highest leaf chlorophyll a and total chlorophyll.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solutione0
- Outcome
- chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissuese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution gave the highest values of vine length , dry weight of shoots/ plant, chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissues, average weight of tuber root, total yield , whereas the same treatment gave the lowest values of weight loss percentage and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.075% chitosan dip and spray produced highest average tuber weight and total yield.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solutione0
- Outcome
- average weight of tuber root, total yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution gave the highest values of vine length , dry weight of shoots/ plant, chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissues, average weight of tuber root, total yield , whereas the same treatment gave the lowest values of weight loss percentage and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.075% chitosan dip and spray produced lowest stored tuber weight loss and decay.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solutione0
- Outcome
- weight loss percentage and decay (%) in tuber rootse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the base of the stem cuttings in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution gave the highest values of vine length , dry weight of shoots/ plant, chlorophyll a and total chlorophyll ( a+b) concentration in leaf tissues, average weight of tuber root, total yield , whereas the same treatment gave the lowest values of weight loss percentage and decay (%) in tuber roots during storage period.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.125% chitosan dip and spray produced highest shoot N, P and K uptake.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosane0
- Outcome
- N,P and K uptakee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosan gave the highest values of N,P and K uptake, marketable yield, starch and total sugar contents in tuber roots.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.125% chitosan dip and spray produced highest marketable yield.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosane0
- Outcome
- marketable yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosan gave the highest values of N,P and K uptake, marketable yield, starch and total sugar contents in tuber roots.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
Combined 0.125% chitosan dip and spray produced highest tuber starch and sugar contents.
- Taxon
- SWEET POTATO PLANTSIpomoea batatast0
- Treatment
- the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosane0
- Outcome
- starch and total sugar contents in tuber rootse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, the base of stem cuttings in 0.125 % chitosan solution before planting + spraying plants with 0.125 % chitosan gave the highest values of N,P and K uptake, marketable yield, starch and total sugar contents in tuber roots.”
t0“SWEET POTATO PLANTS”
Claim · model-written summary
The authors recommend a 0.075% chitosan dip plus three sprays at 15-day intervals beginning 25 days after transplanting for sweet potato growth, yield, quality and storability.
- Taxon
- sweet potato plantsIpomoea batatase0
- Treatment
- dipping the base of the stem cutting in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution three times at 15 days intervals beginning 25 days after transplantinge0
- Outcome
- plant growth, yield and its components, tuber roots quality and storabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conclusively, from the foregoing results of this study, it could be concluded that, under the same conditions, dipping the base of the stem cutting in 0.075 % chitosan solution before planting + spraying plants with 0.075 % chitosan solution three times at 15 days intervals beginning 25 days after transplanting gave the best interaction treatment for increasing plant growth, yield and its components, tuber roots quality and storability of sweet potato plants.”
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See all 5 papers →8 of 13 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.