Canopy temperature and water stress quantificaiton in rainfed pigeonpea (Cajanus cajan (L.) Millsp.)

Patel, N. R.; Mehta, A. N.; Shekh, A. M.

doi:10.1016/s0168-1923(01)00260-x

Cited by 39 publications

(22 citation statements)

References 9 publications

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“…The reduction in the area under medium biomass level was to the extent of 521 ha (4.29 %). Similar results were noticed by Inoue et al (1993), Arun (1998) and Patel et al (2001).…”

Section: Normalized Difference Vegetation Index (Ndvi) Of 1997 and 2002supporting

confidence: 89%

Application of remote sensing technology for Impact Assessment of Watershed Development Programme

Shanwad

Patil

Gowda³

et al. 2008

J Indian Soc Remote Sens

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The current study was taken up to investigate the utility of remote sensing and GIS tools for evaluation of Integrated Wasteland Development Programme (IWDP) implemented during 1997-2001 in Katangidda Nala watershed, Chincholi taluk, Gulbarga district, Karnataka. The study was carried out using IRS 1C, LISS III data of December 11, 1997 (pre-treatment) and November 15, 2002 (post-treatment) covering the watershed to assess the changes in land use / land cover and biomass that have changed over a period of five years (1997)(1998)(1999)(2000)(2001)(2002). The images were classified into different land use/land cover categories using supervised classification by maximum likelihood algorithm. They were also classified into different biomass levels using Normalized Difference Vegetation Index (NDVI) approach. The results indicated that the area under agriculture crops and forest land were increased by 671 ha (5.7%) and 1,414 ha (11.94%) respectively. This is due to the fact that parts of wastelands and fallow lands were brought into cultivation. This increase in the area may be attributed to better utilization of surface and ground waters, adoption of soil and water conservation practices and changes in cropping pattern. The area under waste lands and fallow lands decreased by 1,667 ha (14.07%) and 467 ha (3.94%), respectively. The vegetation vigour of the area was classified into three classes using NDVI. Substantial increase in the area under high and low biomass Photonirvachak 123 RESEARCH ARTICLE 376 J. Indian Soc. Remote Sens. (December 2008) 36:375-386 levels was observed (502 ha and 19 ha respectively). The benefit-cost analysis indicates that the use of remote sensing and GIS was 2.2 times cheaper than the conventional methods. Thus, the repetitive coverage of the satellite data provides an excellent opportunity to monitor the land resources and evaluate the land cover changes through comparison of images for the watershed at different periods.

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“…The reduction in the area under medium biomass level was to the extent of 521 ha (4.29 %). Similar results were noticed by Inoue et al (1993), Arun (1998) and Patel et al (2001).…”

Section: Normalized Difference Vegetation Index (Ndvi) Of 1997 and 2002supporting

confidence: 89%

Application of remote sensing technology for Impact Assessment of Watershed Development Programme

Shanwad

Patil

Gowda³

et al. 2008

J Indian Soc Remote Sens

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“…The drop in rainfall and temperature in November and December were essential for pigeon pea since they coincided with pod maturation and drying. Patel et al (2001) noted that water use efficiency during the reproductive phase in pigeon pea decreased with increasing plant age. The slightly acidic sandy clay loamy soil of the experimental sites was within the tolerable range by both maize and pigeon pea crops.…”

Section: Pigeon Pea Genotypementioning

confidence: 99%

Field Insect Pests and Crop Damage Assessment of Pigeon Pea (Cajanus cajan [L.] Huth) grown under Ratoon and in Mixture with Maize

Dasbak

Echezona

Asiegbu

2012

Chilean J. Agric. Res.

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The widespread adoption of cropping systems that are sustainable and environmentally friendly is vital for the macroeconomic survival of civilization. Intercropping could ensure stability of insect populations in a system. , and variegated grasshoppers (Zonocerus variegatus) were the crop's seedling pests and caused minimal damage. Clavigralla spp. infestations were high at the reproductive stage causing 24% and 29% seed damage in regular and ratoon pigeon pea crops, respectively. Maize slightly suppressed insect pest incidence and damage to pigeon pea pods and seeds but significantly (P < 0.01) reduced grain yield in the regular pigeon pea crops in 2005 and 2006, although not in the 2007 ratoon. The pigeon pea genotypes differed significantly (P < 0.05) in pest incidence at the podding stage in both the regular and ratoon crops and in grain yield (P < 0.01) for the regular crop. Grain yield of the pigeon pea ratoon crops was about 60% of the regular crop. Farmers were recommended to adopt the ICPL 161 and ICPL 87 genotypes based on pest tolerance and high grain yield or as idiotypes in pigeon pea hybridization programs.

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“…However, the correlation between Tc-Ta and ET (r = 0.94-0.98) at the end of the stress interval was highly significant (Ahmed et al, 2006). Patel et al (2001) found that Tc-Ta was significantly (P ≤ 0.05) related to the ET of the pigeon pea. Grey (2010) stated that the regression coefficient (R 2 ) between evapotranspiration (ET) and mean leaf temperature of tomato was 0.648.…”

Section: Relationship Between Daily Et and Tc-tamentioning

confidence: 85%

The effects of water stress on evapotranspiration and leaf temperatures of two olive (Olea europaea L.) cultivars

Çamoğlu

2013

Zemdirbyste-Agriculture

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The evapotranspiration (ET) and leaf temperatures of two olive (Olea europaea L.) cultivars 'Ayvalık' and 'Gemlik' were studied comparatively in fully-irrigated and water-stressed plants. The pot experiment was conducted under field conditions in 2009 and 2010. The experiment consisted of 4 treatments: 1) non water-stressed, 2) mild waterstressed, 3) moderate water-stressed, and 4) fully water-stressed. Leaf temperature (Tc) and ambient air temperature (Ta) of each seedling were measured at midday with an infrared thermometer and psychrometer respectively, and Tc-Ta was assessed. It was found that the irrigation water requirement of 'Gemlik' olive seedlings exceeded that of 'Ayvalık' olive seedlings. Tc-Ta was highest in the fully water-stressed treatment and lowest in the non water-stressed treatment for both olive cultivars. In all treatments, the Tc-Ta of 'Gemlik' was higher than that of 'Ayvalık'. The relationship between Tc-Ta and ET was linear and the coefficients of determination (R 2 = 0.72-0.74 for 'Ayvalık', R 2 = 0.62-0.72 for 'Gemlik' according to the analysis of linear regression) were statistically significant at p < 0.001 for both cultivars. The study showed that leaf temperature changed depending on ET in both olive cultivars and that an infrared thermometer can be used for measuring daily ET in olive seedlings.

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Canopy temperature and water stress quantificaiton in rainfed pigeonpea (Cajanus cajan (L.) Millsp.)

Cited by 39 publications

References 9 publications

Application of remote sensing technology for Impact Assessment of Watershed Development Programme

Application of remote sensing technology for Impact Assessment of Watershed Development Programme

Field Insect Pests and Crop Damage Assessment of Pigeon Pea (Cajanus cajan [L.] Huth) grown under Ratoon and in Mixture with Maize

The effects of water stress on evapotranspiration and leaf temperatures of two olive (Olea europaea L.) cultivars

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