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Rainwater, soil and nutrients conservation for improving productivity of citrus orchards in a drought prone region

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Title Rainwater, soil and nutrients conservation for improving productivity of citrus orchards in a drought prone region
Not Available
 
Creator Panigrahi, P., Srivastava, A.K., Panda, D.K. and Huchche, A.D.
 
Subject Citrus, Soil and water conservation, Yield ,Water productivity ,Fertility, Fruit quality
 
Description Not Available
The abundant surface runoff along with top fertile soil in rainy season, followed by sub-optimal soil
water content (SWC) in root zone of the plants during post-rainy period is one of the major causes of
low productivity and decline of citrus orchards in tropics. Keeping this in view, a study was conducted
for seven years to evaluate the effects of different rainwater conservation techniques (RCTs) on runoff,
soil and nutrients losses and yield of citrus orchard in Vertisols under a sub-humid tropical climate
of central India. The RCTs: staggered trench (ST) and continuous trench (CT) with and without grass
mulch (GM) were imposed in runoff plots (350 m2 area) with 14 citrus plants across the slope (12%) and
their performances were compared with without conservation measure (WCM) treatment. All the RCTs
were effective in conserving rainwater, soil and nutrients (N, P, K, Fe, Mn, Cu and Zn), which imparted
a favourable response on vegetative growth, leaf nutrient content, fruit yield and fruit quality of citrus
plants. However, CT + GM produced the best response, conserving 49% runoff and 51% soil compared
with WCM in the orchard. The available nutrients and organic carbon content in soil were significantly
improved in mulched plots. The runoff generated made linear relations (R2 = 0.82–0.91) with rainfall
amountin treated plots, whereas this relationship was exponential(R2 = 0.89)in WCM plot. However,the
quantity of runoff made the linear relations with soil loss in both treated plots (R2 = 0.76–0.89) and WCM
(R2 = 0.93). The rates of transpiration, photosynthesis and stomatal conductance of leaf and leaf water use
efficiency of the citrus plants were higher under higher available SWC in CT + GM. The CT + GM produced
65% higher fruit yield with better quality fruits (higher juice content, TSS and ascorbic acid content with
lower acidity) using 32% less irrigation water, resulting in 65% improvement in rainwater productivity
and 143% improvement in irrigation water productivity compared with WCM. Citrus production with
CT + GM was also found economically superior to other treatments, generating more annual net income
(INR 125480 ha−1) with higher benefit-cost ratio (3.1). Overall results of this study demonstrates that
the conjunctive use of CT and GM could conserve substantial rainfall runoff, soil and nutrients, resulting
higher yield and water productivity using less irrigation water in citrus orchard in clay soil.
Not Available
 
Date 2018-11-22T09:22:49Z
2018-11-22T09:22:49Z
2017-05-01
 
Type Research Paper
 
Identifier Panigrahi, P., Srivastava, A.K., Panda, D.K. and Huchche, A.D. 2017. Rainwater, soil and nutrients conservation for improving productivity of citrus orchards in a drought prone region. Agricultural Water Management, 185: 65-77
0378-3774
http://krishi.icar.gov.in/jspui/handle/123456789/12791
 
Language English
 
Relation Not Available;
 
Publisher Elsevier