Paddy is considered a significant crop in Indonesia. Hence, it is being cultivated on a wide scale in many territories, particularly those regions having good watering systems. Environmental factors as well as plant genetic factors affect development of plant and quality of final product as well. According to Zaini and team1, extreme weather conditions during the rainy season contribute towards limited paddy production in Indonesia.
The rainy season refers to reduced air temperature, lesser solar radiation, cloudy and high humidity and vice versa in case of dry season. Thus, the same variety cultivated in the same location but with different seasons exhibit different outcome regarding its output. According to some searches, elevated yield of paddy has been noted in dry season as compared to rainy season2,3.
During dry season contributes towards high solar radiation which supports grain ripening stage which ultimately results in maximum yield. Furthermore, leaf morphology may also influence the efficacy of solar radiation. Additionally, plant spacing is also crucial for plants as it influence the sunlight which is used by plants for photosynthesis. Moreover, it also affects the efficacy of nutrient uptake through roots, water necessities, air circulation, microclimate (temperature and humidity) and weed as well as pest populations2.
This factor urged Didik Hariyono and Akbar Hidayatullah Zaini4 for planning a research to assess the most favorable spacing used to plant local varieties. In this experiment scientists followed split plot design by using varieties including Ciherang, Mentik and Genjah Arum varieties as main plots and plant spacing factor as sub plots. %age of productive tillers, 100-grain weight, total grain per panicle, grain weight per clump and number of panicle per clump were then measured.
Outcomes of this study revealed that the response of each variety at various plant spacing exhibited noteworthy link between varieties and plant spacing on the grain weight and number of panicle per clump. While the productive tillers percentage, 100-grain weight and total grain per panicle were only affected by varieties. Conclusively, the treatment of V1J40 (Ciherang variety with plant spacing 40 cm×15 cm), showed maximum grain yield than other treatments. Conclusively, this investigation will provide authentic knowledge on varieties and optimum plant spacing in the rainy season to obtain desired results.
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17 November, 2019