Seed production and quality of okra were obviously influenced by sowing date, harvest date and pod position on the mother plant. The aim of the present study was to determine the effect of sowing dates (1 st March, 1 st April and 1 st May), harvest dates (30 , 40 and 50 days after anthesis (DAA)) and pod position on plant (lower, middle and upper) on seed yield and quality of okra (Balady cv.). Two field experiments were carried out during the summer seasons of 2013 and 2014 at Shandaweel Agriculture Research Station, ARC, Sohag Governorate, Egypt. The obtained results indicated that, sowing okra plants on 1 st April increased all studied characters compared to other sowing dates of 1 st March, or 1 st May. Harvesting pods at 40 or 50 days after anthesis gave the maximum germination percentage comparing to early harvest at 30 days after anthesis. Pods at lower or middle positions on the okra plant exhibited the best values in seed yield in terms of seeds number/pod, seeds weight/ pod, 100 seed weight and quality in terms of germination percentage, root and shoot length of seedlings. All possible combinations had significant effect on pod diameter, seed index, germination percentage and shoot in both seasons. The highest values were obtained from pods of plants sown on in 1 st April and their pods harvesed from lower or middele postions after 40 days after anthesis.It could be recommended from the previous results the highest seed yield and quality was obtained in okra under the condition of this experiment and similar conditions, following planting okra on 1 st April and harvest till 8 th pod after 40 days from anthesis.
This experiment was suggested to study the beneficial effects of some levels of NPK fertilizers i.e. (0, 50, 75 and 100%) from NPK recommendation for common bean with humic acid (HA) on plant growth, dry seed yield and its components, quality and seeds chemical composition of common bean(Phaseolus vulgaris L.) cvs. Nebraska and Bronco. All experiments were achieved at the Experimental Farm of Kaha Research Farm, Horticulture Research Institute, Agriculture Research Center (ARC), Qaliobia Governorate, Egypt, during the two successive summer seasons of 2013 and 2014. The results showed that adding humic acid (HA) to common bean plantswith the level of 50% from NPK recommendation gave the highest values of vegetative growth, total dry seed yield and its chemical composition with cv. Nebraska or also cv. Bronco which cultivated under these study for the purpose of dry seed production. This treatment also led to save 50% of NPK fertilizers for common bean requirements. For that, it can be recommended that fertilization of common bean plants for the purpose of dry seed production by 50% from common bean NPK recommendation plus humic acid (HA) to obtain significant highest dry seed yield with best quality and at the same time save 50% from mineral fertilizer recommendation of common bean.
Field experiment were carried out at Sakha Horticultural Research Station, Agricultural Research Center, Egypt, during two successive winter seasons of 2017/2018 and 2018/2019 to study the effect of foliar spraying with some stimulate substances i.e; Green Miracle (G.M) at the rate of 3cm / L, Mono Potassium Phosphate (MKP) at the rate of 6 gm / L, Naphthalene Acetic Acid (NAA) at the rate of 0.6 gm / L, potassium silicate at the rate of 3cm / L, fulvic acid at the rate of 1 gm / L, Boron (B) at the rate of 1.5 gm / L, Zinc (Zn) at the rate of 1.5 gm / L and (Zinc+ Boron) at the rate of (1.5+1.5) gm / L., besides, control spraying with tap water) on growth characters, dry seed yield and its components and chemical analysis of dry seeds of broad bean (Vicia Faba L) cv. Weaam. The experiments were arranged in a randomized complete block design with three replications. Seeds were sown in the 1 st week of November during the two seasons. The results indicated that all foliar spraying treatments increased vegetative growth characteristics, dry seed yield and its components and chemical constituents in dry seeds compared to control. Where as, foliar spraying with the Green miracle at the rate of cm3/L was among best stimulant substance, since, markedly improved most of the studied characters, i.e. vegetative growth characteristics, dry seed yield and its components and chemical constituents in dry seeds. Treatments led to highly significant increased of all studied parameters followed by foliar spraying with Naphthalene Acetic Acid (NAA) at the rate of 0.6 gm / L and potassium silicate at the rate of 3cm / L. compared to the other treatments or the control.
The current study was carried out at Qaha Vegetable Research Farm (Qalubia Governorate), Horticulture Research Institute, Agriculture Research Center (A. R. C.), Egypt, during the two consecutive winter seasons of 2014/2015 and 2015/2016 to study the influence of different nitrogen fertilization levels i.e. 20, 35 and 50 Kg N/ fed., an inoculation of pea seeds (Pisum sativum L.) cv. Master B with compatible strain of the nodule bacteria Rhizobium leguminosarum, foliar spraying with molybdenum twice at the rate of 10 Mg/ L. and its combinations on vegetative growth, total fresh green pod and dry seed yield (ton/ fed.). Increasing nitrogen fertilization levels from 20 to 50 Kg N/fed. alone led to significant increased plant pea growth, fresh green pod yield, green pod characters, dry seed yield, nitrogen, protein, phosphorus and potassium (%) presenting contents for dry seed. However, the earliest germination rate (days) were obtained with adding 35 Kg N/fed. during the two winter seasons, as compared with the other two levels (20 and 50 Kg N/fed.).Results showed that the Rhizobium inoculation gave better pea growth, green pods yield, dry seed yield and its quality as well as germination ratio, rate (days) and sprout length (cm) with adding 35 Kg N/fed. compared with the same treatments with other two N fertilization levels(20 and 50 kg N/fed). But the foliar spraying by molybdenum twice at the rate of 10 Mg/ L. led to significant increased with nitrogen level from 20 up to 50 Kg N/fed. for all traits under this study. On the other hand, adding 50 Kg N/fed. with the foliar spraying by molybdenum gave significant increased on all parameters for this study compared with other treatments. The results showed that adding 35 Kg N/fed. with Rhizobium inoculation and molybdenum foliar spraying twice at the rate of 10 Mg/L. led to significant increased for total green and dry pea seed yield as well as its characters compared with the same combination under other two nitrogen levels (20 and 50 kg N/fed). In generally, the combination between adding 35 kg N/fed, Rhizobium inoculation and molybdenum foliar spraying twice at the rate of 10 Mg/L was the highest economic return and led to provide 30% of nitrogen fertilization. Fedan = 4200 m 2 .
This field trial was carried out at Sidi Salem district, Kafr El-Sheikh Governorate, Egypt during the two summer seasons of 2017 and 2018 on okra plants (Abelmoschus esculentus L.) cv. Baladi to study the beneficial effects of different levels of phosphorus fertilizer i.e. (0, 30 and 45kg P 2 O 5 ) with micronutrients; Fe, Zn and Mn at 1g/L, or seaweed extract at 3cm/L on plant vegetative growth, dry seed yield and nutrient uptake of okra. All studied treatments were arranged in a split plot design with three replicates. The results showed that adding phosphorus fertilizer at 30kg P 2 O 5 with seaweed extract at 3cm/L to okra plants produced significantly higher values of vegetative growth, total dry seed yield and chemical composition of okra plants followed by phosphorus fertilizer at 30kg P 2 O 5 with Fe at the rate of 1g/L. This shows a significant improvement for okra cultivation by application of phosphorus fertilizer combined with seaweed extract or micronutrients
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