Development of water production function for garden pea under mid hills of Meghalaya
| dc.contributor.advisor | Ray, Lala I. P. | |
| dc.contributor.author | Swetha, Konga | |
| dc.date.accessioned | 2023-02-18T09:57:51Z | |
| dc.date.available | 2023-02-18T09:57:51Z | |
| dc.date.issued | 2022-10 | |
| dc.description.abstract | Garden pea (Pisum sativum L. var. hortense) is an important rabi season crop grown in Indian subcontinent commonly known as 'matar' or 'pea'. Pea is the third most important legume of the world after beans and chickpea, grown for both fresh market and food processing industry. Peas are also known to leave behind 50-60 kg ha-1 residual nitrogen in soil with help of Biological Nitrogen fixation. As pea is a rabi season crop the main sowing seasons are October and November in which around 90% of pea is cultivated. During rabi season country receives very less rains and crops grown during rabi season experience moisture stress which is one of the reasons for low productivity. In such water limiting situations, deficit irrigation is a water management strategy in which water is supplied in less amount than what is required by the crop to meet the crop evapotranspiration (ET) demand without compromising the potential yield. Crop Water Production Functions (CPWF) will be developed through which irrigation water can be allocated efficiently, and thus increasing the water productivity. Keeping above considerations, an agronomic field trial entitled “Development of water production function for Garden pea under mid hills of Meghalaya” has been proposed to be carried out with following objectives.1. To estimate water productivity and develop crop water production function for garden pea. 2. To assess the effect of deficit irrigations on growth and yield of garden pea. 3. To find out the benefit cost ratio (BCR) of garden pea crop production. The field trial was laid under split plot design with irrigation scheduling’s based on maximum allowed depletion (MAD) under main plot with four irrigations i.e., 20% of MAD, 40% of MAD, 60% of MAD and 100% of MAD and with four different cultivars (V1- VM 10, V2 - VM 12, V3 - VL Sabji Matar 15, V4 - VL Sabji Matar 13) under sub plot, and was replicated thrice. From the experiment the following results were obtained: The growth and yield parameters such as plant height (65.85 cm), no. of branches per plant (13.75) and dry matter accumulation (7.33 g), no. of pods per plant (11.81) and green pod yield (8.19 t ha-1) were found significantly highest in treatment I1. However, treatment I2 was statistically at par with I1 in all the growth and yield parameters with plant height of 64.46 cm, no. of branches per plant (13.59) and dry matter accumulation (7.11 g), no. of pods per plant (11.28) and green pod yield (7.91 t ha-1). The significantly highest water productivity was found in treatment I4 – 3.93 kg m-3 over I2 – 3.56 kg m-3, I3- 3.34 kg m-3 and I1 - 2.63 kg m-3. The crop water production function was obtained as Y = -0.0001x2 + 0.0633x - 1.5064; with R² = 0.96 on pooled analysis of all cultivars. Among the cultivars highest yield and water productivity was noticed in V4 as 7.23 t ha-1 and 3.70 kg m-3. Similarly, the highest BCR was observed in main plot treatment, I1- 2.30 and in cultivar V4 – 2.06. Based on the field trial it may be suggested that, under given irrigation regimes winter season of Meghalaya, irrigation at 40% of MAD may be recommended in which marginal reduction in yield was seen but it does not compromise with maximum potential yield eventually the higher water productivity over I1. | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810194071 | |
| dc.keywords | Maximum allowable depletion (MAD), North eastern region (NER), water productivity, Water production functions, benefit cost ratio. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 86p. | en_US |
| dc.publisher | College of Post Graduate Studies in Agricultural Sciences, CAU-Imphal, Umiam | en_US |
| dc.sub | Agronomy | en_US |
| dc.subject | Water availability | en_US |
| dc.subject | Pisum sativum | en_US |
| dc.theme | Academic Research | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Development of water production function for garden pea under mid hills of Meghalaya | en_US |
| dc.type | Thesis | en_US |