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Effects of organic amendments on productivity and profitability of bell pepper-french beangarden pea system and on soil properties during transition to organic production.

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Title Effects of organic amendments on productivity and profitability of bell pepper-french beangarden pea system and on soil properties during transition to organic production.
Effects of organic amendments on productivity and profitability of bell pepper-french beangarden pea system and on soil properties during transition to organic production.
 
Creator ICAR_CRIDA
 
Subject Bell pepper, economics, french bean, garden pea, organic farming, soil fertility, transition
 
Description Not Available
A transition period of at least 2 years is required for annual crops before the produce
may be certified as organically grown. There is a need to better understand the various
management options for a smooth transition from conventional to organic production.
The purpose of this study was to evaluate the effects of different organic amendments and biofertilizers (BFs) on productivity and profitability of a bell pepper–french
bean–garden pea system as well as soil fertility and enzymatic activities during conversion to organic production. For this, the following six treatments were established in
fixed plots: composted farmyard manure (FYMC, T1); vermicompost (VC, T2); poultry
manure (PM, T3) along with biofertilizers (BF) [Rhizobium/Azotobacter + phosphorus
solubilizing bacteria (Pseudomonas striata)]; mix of three amendments (FYMC + PM
+ VC + BF, T4); integrated nutrient management (FYMC + NPK, T5); and unamended
control (T6). The yields of bell pepper and french bean under organic nutrient management were markedly lower (25.2–45.9% and 29.5–46.2%, respectively) than with
the integrated nutrient management (INM). Among the organic treatments, T4 and T1
produced greater yields of both bell pepper (27.96 Mg ha–1) and french bean (3.87 Mg
ha–1) compared with other treatments. In garden pea, however, T4 gave the greatest
pod yield (7.27 Mg ha–1) and was significantly superior to other treatments except T5
and T1. The latter treatment resulted in the lowest soil bulk density (1.19 Mg m–3)
compared with other treatments. Similarly, soil organic C was significantly greater in
all the treatments (1.21–1.30%) except T2 compared to T6 (1.06%). Plots under INM,
however, had greater levels of available nitrogen–phosphorus–potassium (NPK) than
those under organic amendments. T1 plots showed greater dehydrogenase and acid
phosphatase activities compared with other treatments. However, T4 and T5 plots had
greater activities of β-glucosidase and urease activities, respectively. The cost of cultivation was greater under organic nutrient management (except T2) compared with
INM. The latter treatment gave greater gross margin and benefit/cost (B/C) ratio for
all vegetables, except that T2 gave greater B/C ratio in garden pea compared with other
treatments. We conclude that T1 and T4 were more suitable for enhancing the productivity of bell pepper–french bean–garden pea system, through improved soil properties,
during transition to organic production.
Not Available
 
Date 2020-02-25T06:38:28Z
2020-02-25T06:38:28Z
2011
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32644
 
Language English
 
Relation Not Available;
 
Publisher Gopinath KA