Response of cabbage (Brassica oleracea var. capitata L.) to different frequencies of irrigation and levels of soil fertilization in a non-saline coastal Typic Endoaquept
Sanmay Kumar Patra, Ratneswar Poddar, Ranajit Panda, Arindam Sarkar, Ahmed Gaber, Akbar Hossain
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引用次数: 0
Abstract
Scheduling of irrigation and fertilizer dose is crucial for the sustainable production of cabbage. A field experiment was conducted to investigate the impact of irrigation and fertilizer schedule on cabbage yield during the Rabi season of 2015-16 and 2016-17 on a non-saline coastal soil of eastern India. The treatment comprised three different irrigation frequencies (I1: eight irrigations, I2: four irrigations, I3: three irrigations) and three different levels of fertilizer (F1: 100% RDF, F2: 75% RDF, F3: 50% RDF). The results revealed that all the growth, yield parameters and head yield (37.37 t ha−1) were significantly higher in treatment I2F1. The highest yield of 43.03 t ha−1 at 340 mm irrigation water was predicted from the water-yield production functional model. Maximum CWP and IWP (15.07 and 19.08 kg m−3, respectively) were recorded in the highest irrigation interval supplemented with 100% RDF (I3F1). A maximum fertilizer use efficiency of 309.4 kg kg−1 of nutrient applied was obtained with moderate irrigation coupled with 50% RDF (I2F3). Soil depths of 0–30 and 30–60 cm accounted for 87.3% and 12.7% of the total soil moisture extraction, respectively. The highest residual available NPK in soil was found in treatment I2F1, while the lowest amount was recorded in I3F3. The maximum economic benefit (BCR; benefit-cost ratio) (4.51) was recorded under I2F1 treatment, whereas, treatment I3F3 observed the minimum BCR value (3.37). We recommend that four-irrigation scheduling complemented with 100% RDF could be the most effective and remunerative for the cabbage growers of non-saline coastal soils of eastern India under limited water supply conditions.
期刊介绍：
The Journal of Coastal Conservation is a scientific journal for the dissemination of both theoretical and applied research on integrated and sustainable management of the terrestrial, coastal and marine environmental interface.
A thorough understanding of both the physical and the human sciences is important to the study of the spatial patterns and processes observed in terrestrial, coastal and marine systems set in the context of past, present and future social and economic developments. This includes multidisciplinary and integrated knowledge and understanding of: physical geography, coastal geomorphology, sediment dynamics, hydrodynamics, soil science, hydrology, plant and animal ecology, vegetation science, biogeography, landscape ecology, recreation and tourism studies, urban and human ecology, coastal engineering and spatial planning, coastal zone management, and marine resource management.
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