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- Title
Impact of Cutting System and Different Application of Potassium Fertilizer on Seed Production and its Quality of Forage Cowpea.
- Authors
Hassan, Hend H. M.; Abd El- Monem, A. M. A.; Eraky, Hania A. M.
- Abstract
Two field experiments were carried out during two successive summer seasons of 2018 and 2019 at Kafr Al-hamam Agricultural Research Station Sharkia government, Agric. Research Center (ARC). The aim of this work, to study the effect of three cutting system i.e. (without cut, after one cut and two cuts) and six potassium fertilizer application (control, 100% K as soil, 50% K as soil + K as foliar spray at flowering stage, 50% K as soil + K as foliar spray at flowering and pods filling stages, 25% K as soil + K as foliar spray at flowering stage and 25% K as soil + K as foliar spray at flowering and pods filling stages) on seed production and seed quality parameters of cowpea crop. The most important results are summarized as follows: Seed production without cut of plants or after once cut generally, increased plant height, number of seed plant-1, number of pods plant-1, pod length, weight of pods plant-1, 100 weight seed, harvest index and seed yield. The increases of seed yield after the first cut and the second cut compared by without cutting system reached 54.56 and 44.08 %, respectively. Also, germination%, seedling vigor index 1 and 2, shoot and radical lengths as well as fresh and dry weight of seedling were decreased of seed obtained after twice cut of cowpea on basis combined data. In general, K fertilizer significantly affected the seed yield attributes except plant height. Potassium fertilizer application of 50% potassium as soil + potassium as foliar spray at flowering and pods filling stages increased seed yield fad.- 1 with 55.84% over control. On the other side, using of the same application of Potassium fertilizer was effective in producing higher seed viability and vigor over control in combined data. The two cutting systems which were left plants without cut then taken seeds or taken seeds after once cut fertilized by 50% potassium as soil + potassium as foliar spray at flowering and pods filling stages produced the highest seed yield fad.-1 (649.01 and 617.47 kg), respectively. Also, most quality parameters were increased and improved under this treatment compared with other treatments. According to results of present study, it also recorded the highest net return per one invested L.E. (2.29L.E.). It can be included that farmers can obtain the same cowpea yield if they once were cutting system with applying Potassium fertilizer of 50% potassium as soil + potassium as foliar spray at flowering and pods filling stages. In this way, it is possible to take a cut as green fodder that contributes to filling the feed gap during the summer months on the other hand, reduce the expensive potassium fertilizers were added on as ground and replace them with foliar spray fertilizers help to reduce environment pollution, as well as the basic goals of produced a better seeds quantity and quality with the lowest cost in terms of yield. To achieve highest seed yield with concerning quality of cowpea, its recommended to obtain seeds after once cut with treatment of 50% potassium as soil application + 50% potassium as foliar application at flowering and pods filling stages respectively.
- Subjects
POTASSIUM fertilizers; FERTILIZER application; FOLIAR feeding; SEED quality; SEED industry; COWPEA; SEED yield; SEED harvesting
- Publication
Assiut Journal of Agricultural Sciences, 2021, Vol 52, Issue 5, p25
- ISSN
1110-0486
- Publication type
Article
- DOI
10.21608/ajas.2022.104794.1063