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 -1 . The largest yield, 120.7 Mg ha -1 , 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 -1 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 6
Claim · model-written summary
Fertilization significantly changed Chinese cabbage yield.
- Taxon
- Chinese cabbage
Brassica rapa subsp. pekinensise1 - Treatment
- Fertilizatione0
- Outcome
- quantity of obtained yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization significantly modified the quantity of obtained yield.”
e1“Chinese cabbage (Brassica rapa L.)”
Claim · model-written summary
Unfertilized control yield was 44.22 Mg ha -1.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Treatment
- without mineral fertilizatione0
- Outcome
- crop yielde0
- Value
- 44.22 Mg ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the control, without mineral fertilization, the crop yield was 44.22 Mg ha -1 .”
e1“Chinese cabbage (Brassica rapa L.)”
Claim · model-written summary
The maximum yield was 120.7 Mg ha -1 under the specified slow fertilizer mix.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Treatment
- 400 kg of slow-acting fertilizer, 89 kg of triple superphosphate and 177 kg of potassium salte0
- Outcome
- yielde0
- Direction
- largeste0
- Value
- 120.7 Mg ha -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest yield, 120.7 Mg ha -1 , 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.”
e1“Chinese cabbage (Brassica rapa L.)”
Claim · model-written summary
Best fertilizer efficiency values occurred with 400 and 500 kg ha -1 slow fertilizer plus full phosphorus and potassium.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Treatment
- 400 and 500 kg ha -1 of slow-acting fertilizer and full doses of phosphorus and potassiume0
- Outcome
- fertilization efficiencye0
- Direction
- best optimale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best optimal values of fertilization efficiency were obtained in the objects where 400 and 500 kg ha -1 of slow-acting fertilizer and full doses of phosphorus and potassium were applied.”
e1“Chinese cabbage (Brassica rapa L.)”
Claim · model-written summary
Optimized slow fertilizer may improve efficiency several-fold over traditional fertilizers.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Treatment
- optimization of fertilization using slow-acting fertilizere0
- Outcome
- fertilization efficiencye0
- Direction
- improvee0
- Value
- several-folde0
- Comparator
- integrated production methods using traditional fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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.”
e1“Chinese cabbage (Brassica rapa L.)”
Claim · model-written summary
Optimization may increase fertilizer nitrogen uptake by 50% while maintaining high yield.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Treatment
- optimization of fertilizatione0
- Outcome
- fertilizer nitrogen uptakee0
- Direction
- enhancee0
- Value
- 50 %e0
- Qualifier
- maintained high crop yieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimization of fertilization in conditions of intensive production may enhance fertilizer nitrogen uptake by 50 % at maintained high crop yields”
e1“Chinese cabbage (Brassica rapa L.)”
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