scholarly journals Effects of Sowing Date on the Growth, Yield and Palatability of Japanese Rice Cultivated by Non-tillage Direct Sowing in Kagawa Prefecture

2017 ◽  
Vol 86 (3) ◽  
pp. 267-275
Author(s):  
Bing He ◽  
Masanori Toyata ◽  
Akihito Kusutani
Author(s):  
Saikat Biswas

Cereal crops such as maize, wheat, sorghum and pearl millet are important for human consumption due to their nutritional benefits. These cereals play pivotal roles to meet world’s food demand. However, maintenance of food security particularly in the circumstance of changing climate, constantly urges for modification of agro-techniques and one such modification is the incorporation of transplanting technique in these cereals as an alternative under a non-practicable situation of direct sowing. Transplanting is a method of transferring seedlings grown in nursery or others to the field. It has been already found to shorten the crop duration and improve germination, plant stand, seed and seedling quality parameters, growth, yield and economic profitability of these cereals. Besides, research findings are also available stating that transplanting helps these cereals to cope up with vagaries of weather and to exhibit greater radiation and water use efficiencies and suppression of weeds. Outcomes of transplanting are however dependent on various factors like methods of nursery raising, the variety used, mode of planting, age of seedlings etc. In spite of these prospects, transplanting technique is not so popular in these cereals due to poor dissemination, discouraging research findings, pest and disease problems, lack of suitable package of practices etc. Therefore, focuses are to be given in conducting more and more research trials to confirm its location and situation wise efficacy and also in developing and disseminating a suitable package of practices of transplanting accordingly.


Author(s):  
Nahed S. A. El-Shayeb ◽  
Naglaa F. S. I. Elbohy ◽  
Mohammed A. I. Abdelkader

To enhance growth and productivity of roselle plant, two field experiments were done during the two consecutive summer season of 2019 and 2020 at Experimental Farm (Ghazala Farm), Faculty of Agriculture, Zagazig University, Egypt. This study included different pinching time treatments (after 4, 6, 8 and 12 weeks from sowing date) as the main factor and potassium fertilization rate (0.0, 25, 50 and 75 kg K2O/ feddan) as sub-factor as well as their combinations to improve growth, yield, anthocyanin content and some chemical contents of Hibiscus sabbdariffa plant. Results could be summarized as follow: The longest roselle plants were recorded with the control treatment (pinched after 4 weeks from sowing date), whereas pinching after 12 weeks from sowing date increased number of branches/plant. Also, apical bud pinching after 12 weeks from sowing date recorded the highest number of fruits per plant, dry sepals yield/plant and per feddan. Delaying pinching date from 4 to 8 weeks gradually increased anthocyanin content. In addition, total chlorophyll content as well as total carbohydrates, total nitrogen, total phosphorus and potassium percentages were increased with delaying pinching date especially after 12 weeks, in most cases. Potassium fertilization rate at 75 kg per feddan recorded the highest values of growth, yield components and the chemical constituents with significant differences between this rate and the other rates under study. Generally, the combination treatment between pinching after 12 weeks from sowing date and 75 kg potassium fertilization rate had significant effect in most parameters compared to the other combination treatments during both seasons.


1986 ◽  
Vol 106 (1) ◽  
pp. 21-26 ◽  
Author(s):  
G. O. Iremiren ◽  
D. A. Okiy

SUMMARYTwo varieties of okra were sown at approximately 14-day intervals from 1 April to 1 June for 2 years during the main rainy season in Nigeria. Low soil temperature and moisture, which resulted from a combined effect of high solar radiation, high atmospheric temperature and low rainfall, led to poor seedling emergence at the early sowing dates.The growth of the fewer plants of the early sowing dates were more vigorous than those of later sowing dates and they attained 50% flowering earlier and had a longer harvest duration. This resulted in increases in number of pods per plant, pod length, pod diameter, pod volume, pod weight and pod yield per ha, indicating compensatory growth by the fewer plants in the early plantings. The relatively lower values obtained for these variables with the late sowing dates were also attributed to possible poor soil aeration arising from the increased rainfall during their growth period.Sowing dates did not generally affect the percentage moisture, oil and protein in the pods. The effects of varieties on the variables measured were more uniform than those of sowing dates and mostly not significant.


Author(s):  
P. Sneha Reddy ◽  
G. Satyanarayana Reddy ◽  
K. B. Suneetha Devi ◽  
A. Krishna Chaitanya

This experiment was conducted at College Farm, Agricultural College, Polasa, Jagtial in Rabi, 2019-20. The experiment was laid out in strip-plot design with T1-Zero tillage with direct sowing, T2-Zero tillage with transplanting, T3-Conventional tillage with direct sowing and T4-Conventional tillage with transplanting in 4 horizontal strips and D1-15 November, D2-25 November and D3-5 December sowing dates in 3 vertical strips. Nursery was prepared 15 days earlier to sowing date for transplanting. Direct sowing and transplanting was carried out on same date. Among tillage practices with establishment methods, significantly the highest performance of growth parameters was obtained with T4 and lowest response under T1. Significantly higher values of growth parameters were recorded under early sowing date (15 November) followed by 25 November and lowest was registered on 5 December. The number of siliqua plant-1, seeds siliqua-1 was significantly higher under T4 which resulted in higher seed yield (754.38 kg ha-1), stover yield (1815.40 kg ha-1) and was comparable with T3. Higher number of siliqua per plant-1 and number of seeds per siliqua-1 resulting in higher seed yield (944.55 kg ha-1) and stover yield (1943.12 kg ha-1) were recordeed on 15 November followed by 25 November and lowest was registered on 5 December.


2020 ◽  
Vol 116 (1) ◽  
pp. 11
Author(s):  
Saad ABOUL-EL-HASSAN ◽  
Saad Aly EMAM ◽  
M. H. GAD EL-MOULA

<p>Field experiment was conducted at the experimental farm of the Central Laboratory for Agricultural Climate, Agricultural Research Center, Giza, Egypt, during two successive seasons of 2017 and 2018.  This experiment aims to improve the organic production of sweet corn via some organic extracts under different sowing dates. The seeds of sweet corn (Misthi F1 Hybrid) were planted on three different dates on 15 April, 10 May and 5 June in both seasons. Extracts of compost, vermicompost and chicken manure with applying half dose of compost were compared to full dose of compost. Results showed that early sowing had positive effect on growth, yield and ear properties of sweet corn. Applying half dose of compost with adding vermicompost extract gave the highest growth, yield and ear properties of sweet corn without significant differences compared to 50 % compost + chicken manure extract treatment in plant height and leaves number per plant. The treatments of the half dose of compost with adding any organic extracts were superior to the full dose of compost in all studied traits. This study revealed that early planting (April 15) with applying a half dose of compost + vermicompost extract produced the highest yield and quality of sweet corn ears.</p>


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