Abstract
The study aimed to assess the suitability of slow-acting fertilizer in cultivation of Chinese cabbage in the integrated production system. The assumed objective was realized on the basis of a strict field experiment set up on the soil with granulometric composition of medium loam. The test plant was Chinese cabbage (Brassica rapa L.), ‘Parkin F1’ cv. The experiment was set up on 17.08.2011 and the plants were harvested on 08.10.2011. The experimental factor was diversified fertilization. The cultivation and protection of the plants were conducted on the basis of methodology of Chinese cabbage integrated production approved by the Main Inspector for Plant Protection and Seed Science. Traditional fertilizers (triple superphosphate, potassium salt and ammonium nitrate) and NPKCaMg (18-05-10-4-2) multi-component fertilizer with nutrient slow-release were applied. The experiment comprised 8 fertilization variants and the control treatment. Doses of phosphorus and potassium, meeting the plants requirements at assumed yield amount, were applied in all fertilization variants. Nitrogen fertilization on subsequent objects differed both with the form and quantity of applied element. On the basis of the results obtained in conducted experiments, the indices showing nitrogen fertilization efficiency were computed: agronomic efficiency, partial factor productivity, physiological efficiency, nitrogen recovery efficiency and removal efficiency. Fertilization significantly modified the quantity of obtained yield. On the control, without mineral fertilization, the crop yield was 44.22 Mg ha. The largest yield, 120.7 Mg ha, was obtained on the object with an admixture of 400 kg of slow-acting fertilizer, 89 kg of triple superphosphate and 177 kg of potassium salt. The best optimal values of fertilization efficiency were obtained in the objects where 400 and 500 kg ha of slow-acting fertilizer and full doses of phosphorus and potassium were applied. Computed indices of fertilization efficiency indicate that optimization of fertilization using slow-acting fertilizer, particularly in conditions of intensive cultivation, may improve fertilization efficiency several-fold in comparison with integrated production methods using traditional fertilizers. Results of conducted experiments show that optimization of fertilization in conditions of intensive production may enhance fertilizer nitrogen uptake by 50 % at maintained high crop yields, which greatly improves economic effectiveness of production and reduces the amount of biogens dispersed in the environment.
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Claims 8
Claim · model-written summary
Fertilization significantly modified the quantity of obtained yield of Chinese cabbage.
- Taxon
- chinese cabbage
Brassica rapa subsp. pekinensist0 - Treatment
- Fertilizatione1
- Outcome
- quantity of obtained yielde1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e1“Fertilization significantly modified the quantity of obtained yield”
Claim · model-written summary
On the control without mineral fertilization, Chinese cabbage yield was 44.22 Mg/ha.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Outcome
- crop yielde2
- Value
- 44.22 Mg hae2
- Qualifier
- without mineral fertilizatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e2“On the control, without mineral fertilization, the crop yield was 44.22 Mg ha”
Claim · model-written summary
The largest yield, 120.7 Mg/ha, was obtained with 400 kg slow-acting fertilizer, 89 kg triple superphosphate and 177 kg potassium salt.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- an admixture of 400 kg of slow-acting fertilizer, 89 kg of triple superphosphate and 177 kg of potassium salte3
- Outcome
- yielde3
- Direction
- largeste3
- Value
- 120.7 Mg hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e3“The largest yield, 120.7 Mg ha, was obtained on the object with an admixture of 400 kg of slow-acting fertilizer, 89 kg of triple superphosphate and 177 kg of potassium salt”
Claim · model-written summary
The best optimal fertilization efficiency values were obtained with 400 and 500 kg/ha slow-acting fertilizer plus full phosphorus and potassium doses.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- 400 and 500 kg ha of slow-acting fertilizer and full doses of phosphorus and potassiume4
- Outcome
- fertilization efficiencye4
- Direction
- beste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e4“The best optimal values of fertilization efficiency were obtained in the objects where 400 and 500 kg ha of slow-acting fertilizer and full doses of phosphorus and potassium were applied”
Claim · model-written summary
Optimized fertilization with slow-acting fertilizer may improve fertilization efficiency several-fold compared with integrated production using traditional fertilizers.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- optimization of fertilization using slow-acting fertilizere5
- Outcome
- fertilization efficiencye5
- Direction
- improvee5
- Value
- several-folde5
- Comparator
- integrated production methods using traditional fertilizerse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e5“optimization of fertilization using slow-acting fertilizer, particularly in conditions of intensive cultivation, may improve fertilization efficiency several-fold in comparison with integrated production methods using traditional fertilizers”
Claim · model-written summary
Optimized fertilization in intensive production may enhance fertilizer nitrogen uptake by 50% while maintaining high crop yields.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- optimization of fertilization in conditions of intensive productione6
- Outcome
- fertilizer nitrogen uptakee6
- Direction
- enhancee6
- Value
- 50 %e6
- Qualifier
- at maintained high crop yieldse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e6“optimization of fertilization in conditions of intensive production may enhance fertilizer nitrogen uptake by 50 % at maintained high crop yields”
Claim · model-written summary
Optimized fertilization in intensive production improves economic effectiveness of production.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- optimization of fertilization in conditions of intensive productione6
- Outcome
- economic effectiveness of productione7
- Direction
- improvese7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e6“optimization of fertilization in conditions of intensive production may enhance fertilizer nitrogen uptake by 50 % at maintained high crop yields”
e7“which greatly improves economic effectiveness of production and reduces the amount of biogens dispersed in the environment”
Claim · model-written summary
Optimized fertilization in intensive production reduces the amount of biogens dispersed in the environment.
- Taxon
- chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- optimization of fertilization in conditions of intensive productione6
- Outcome
- the amount of biogens dispersed in the environmente7
- Direction
- reducese7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“integrated cultivation of chinese cabbage”
e6“optimization of fertilization in conditions of intensive production may enhance fertilizer nitrogen uptake by 50 % at maintained high crop yields”
e7“which greatly improves economic effectiveness of production and reduces the amount of biogens dispersed in the environment”
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