Browsing by Author "Namitha, V V."

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    Crop intensification and nutrient management in coconut based multistoried cropping system in southern laterities (AEU 8)
    (Department of agronomy, college of agriculture,Vellayani, 2023-10-30) Namitha, V V.; Sheeja, K Raj
    The study entitled “Crop intensification and Nutrient Management in Coconut Based Multistoried cropping system in Southern Laterites (AEU 8)” was undertaken at College of Agriculture, Vellayani during 2019-2023. The field experiments were conducted at Coconut Research Station, Balaramapuram, Kerala, India, and it comprised of two parts. First experiment was conducted during 2021-22 with an objective to identify the most productive and economic coconut based cropping system for AEU 8 and the second experiment was conducted during 2022-23 to evaluate the moisture utilization pattern and physiological parameters of the system. The first experiment was laid out in RBD with two factors and five replications. The treatments comprised eight crop combinations (C1: coconut + banana+ turmeric, C2: coconut + banana + ginger, C3: coconut + banana + cassava, C4: coconut + banana + elephant foot yam, C5: coconut + papaya + turmeric, C6: coconut + papaya + ginger, C7: coconut + papaya + cassava, C8: coconut + papaya + elephant foot yam) and two nutrient levels for the floor crop (N1: RDF for the floor crop and N2: 75 per cent RDF for the floor crop). The crops used for the experiment were banana (var. Nendran), papaya (var. Red Lady), turmeric (var. Varna), ginger (var. Maran), cassava (var. Vellyanai Hraswa) and elephant foot yam (var. Gajendra). Inter row space available between the four coconut palms (60 years) planted at a spacing of 7.5 m x 7.5 m was treated as one unit (56.25 m2). In the inter row spaces 12 no.’s of banana/papaya were planted as per the treatment. Coconut, banana and papaya were manured as per POP recommendations and for the floor crops, RDF were given as per the treatments and FYM were given as per POP recommendations. From the results it could be concluded that, among the crop combinations coconut (RDF) + banana (RDF) + turmeric (75 per cent RDF) (c1n2) resulted in the highest nut equivalent yield, system productivity, net return and BCR. The results of physiological parameters viz., stomatal frequency, soluble protein content, chlorophyll content and CO2 emission, competition indices viz., land equivalent ratio, aggressivity, relative crowding co-efficient and competition ratio and the energy equivalence viz., energy output and energy ratio also confirmed the superiority of c1n2. The soluble protein content of coconut leaf and the root density of coconut were not significantly influenced by crop combination and floor crop nutrition. Hence, coconut + banana + turmeric could be adjudged as the most productive and economic crop combination for coconut based multistoried cropping system in Southern Laterites (AEU 8).