198
Jayakumar M, Surendran U (2017) Intercropping and balanced nutrient management for sustainable cotton production. J Plant Nutr 40(5):632–644
Kabote SJ, Mamiro D, Synnevåg G, Urassa JK, Mattee AZ, Mbwambo JS, Nombo CI, Masolwa
LW, Chingonikaya EE (2013) Inter-annual anomaly and seasonal variability of rainfall and
temperature in selected semi-arid areas of Tanzania. J Contin Educ Ext 4(2):295–317
Khaliq A, Abbasi MK, Hussain T (2006) Effects of integrated use of organic and inorganic nutrient sources with effective microorganisms (EM) on seed cotton yield in Pakistan. Bioresour
Technol 97(8):967–972
Khan MB, Khaliq A (2004) Study of mungbean intercropping in cotton planted with different
techniques. J Res (Sci) 15(1):23–31
Khargkharate VK, Kadam GL, Pandagale AD, Awasarmal VB, Rathod SS (2014) Studies on kharif
legume intercropping with Bt cotton under rainfed conditions. J Cotton Res Dev 28(2):243–246
Kniss AR, Savage SD, Jabbour R (2016) Commercial crop yields reveal strengths and weaknesses
for organic agriculture in the United States. PloS ONE 11(8):e0161673
Kumari AL, Veeraiah K, Kumari SR (2010) Long term effects of manures and fertilizers on productivity of rainfed cotton and soil fertility in Vertisols. J Cotton Res Dev 24(2):200–204
Lee J, Hwang S, Ha I, Min B, Hwang H, Lee S (2015) Comparison of bulb and leaf quality, and
antioxidant compounds of intermediate-day onion from organic and conventional systems.
Hortic Environ Biotechnol 56(4):427–436
Lenth R (2019) emmeans: Estimated Marginal Means, aka Least-Squares Means. R package version 1.3.5.1. https://CRAN.R-project.org/package=emmeans
Lorenz K, Lal R (2016) Environmental impact of organic agriculture. Adv Agron 139:99–152
Lukonge EP, Maryke L, Liezel H (2007) Combining ability for yield and fibre characteristics in
Tanzanian cotton germplasm. Euphytica 161:383–389
Makita R (2012) Fair Trade and organic initiatives confronted with Bt cotton in Andhra Pradesh,
India: A paradox. Geoforum 43:1232–1241
Mankar DD, Nawlakhe SM (2009) Yield attributes and yield of cotton (main crop) and greengram
(intercrop) and quality of cotton as influenced by INM under cotton+ greengram intercropping.
J Soils Crops 19(2):315–319
Moe K, Mg KW, Win KK, Yamakawa T (2017) Combined effect of organic manures and inorganic
fertilizers on the growth and yield of hybrid rice (Palethwe-1). Am J Plant Sci 8:1022–1042
Motsara MR, Roy RN (2008) Guide to laboratory establishment for plant nutrient analysis. FAO
fertilizer and plant nutrition bulletin 19
Mowo JG, Floor J, Kaihura FBS, Magoggo JP (1993) Review of fertilizer recommendations in
Tanzania: Part 2, Revised fertilizer recommendations for Tanzania. Soil Fertility Report No. 6.
National Soil Service, ARI–Mlingano, Tanga, Tanzania
Nandini S, Chellamuthu V (2004) Relative performance of cotton cultivars under sole and intercropping situations in the coastal region of Karaikal. In: Proceeding of International Symposium
on Strategies for Sustainable Cotton Production-A Global Vision 2. Universty of Agricultural
Sciences, Karnataka, India. pp 235–237
Nelson L, Giles J, MacIlwain C, Gewin V (2004) Organic frequently asked questions (FAQs).
Nature 428:796–798
Nelson DW, Sommers LE (1982) Total carbon, organic carbon, and organic matter. In: Page AL,
Miller RH, Keeney DR, Baker DE, Roscoe E, Ellis J, Rhodes JD (eds) Methods of soil analysis.
Part 2. Chemical and Microbiological Properties. 2nd edn. Agronomy Monograph 9.2. ASA
and SSSA, Madison, WI. pp 539–581
OECD (2008) Consensus Document on the Biology of Cotton (Gossypium spp.). OECD Series
on Harmonisation of Regulatory Oversight in Biotechnology Paris, OECD. ENV/JM/
MONO(2008)38 No. 45: 64
Okalebo JR, Gathua KW, Woomer PL (2002) Laboratory methods of soil and plant analysis a
working manual, 2nd edn. TSBF-CIAT and SACRED Africa, Nairobi
Olsen SR, Sommers LE (1982) Phosphorous. In: Page AL, Miller RH, Keeney DR, Baker
DE, Roscoe E, Ellis J, Rhodes JD (eds) Methods of soil analysis. Part 2. Chemical and
T. N. Bwana et al.
Jayakumar M, Surendran U (2017) Intercropping and balanced nutrient management for sustainable cotton production. J Plant Nutr 40(5):632–644
Kabote SJ, Mamiro D, Synnevåg G, Urassa JK, Mattee AZ, Mbwambo JS, Nombo CI, Masolwa
LW, Chingonikaya EE (2013) Inter-annual anomaly and seasonal variability of rainfall and
temperature in selected semi-arid areas of Tanzania. J Contin Educ Ext 4(2):295–317
Khaliq A, Abbasi MK, Hussain T (2006) Effects of integrated use of organic and inorganic nutrient sources with effective microorganisms (EM) on seed cotton yield in Pakistan. Bioresour
Technol 97(8):967–972
Khan MB, Khaliq A (2004) Study of mungbean intercropping in cotton planted with different
techniques. J Res (Sci) 15(1):23–31
Khargkharate VK, Kadam GL, Pandagale AD, Awasarmal VB, Rathod SS (2014) Studies on kharif
legume intercropping with Bt cotton under rainfed conditions. J Cotton Res Dev 28(2):243–246
Kniss AR, Savage SD, Jabbour R (2016) Commercial crop yields reveal strengths and weaknesses
for organic agriculture in the United States. PloS ONE 11(8):e0161673
Kumari AL, Veeraiah K, Kumari SR (2010) Long term effects of manures and fertilizers on productivity of rainfed cotton and soil fertility in Vertisols. J Cotton Res Dev 24(2):200–204
Lee J, Hwang S, Ha I, Min B, Hwang H, Lee S (2015) Comparison of bulb and leaf quality, and
antioxidant compounds of intermediate-day onion from organic and conventional systems.
Hortic Environ Biotechnol 56(4):427–436
Lenth R (2019) emmeans: Estimated Marginal Means, aka Least-Squares Means. R package version 1.3.5.1. https://CRAN.R-project.org/package=emmeans
Lorenz K, Lal R (2016) Environmental impact of organic agriculture. Adv Agron 139:99–152
Lukonge EP, Maryke L, Liezel H (2007) Combining ability for yield and fibre characteristics in
Tanzanian cotton germplasm. Euphytica 161:383–389
Makita R (2012) Fair Trade and organic initiatives confronted with Bt cotton in Andhra Pradesh,
India: A paradox. Geoforum 43:1232–1241
Mankar DD, Nawlakhe SM (2009) Yield attributes and yield of cotton (main crop) and greengram
(intercrop) and quality of cotton as influenced by INM under cotton+ greengram intercropping.
J Soils Crops 19(2):315–319
Moe K, Mg KW, Win KK, Yamakawa T (2017) Combined effect of organic manures and inorganic
fertilizers on the growth and yield of hybrid rice (Palethwe-1). Am J Plant Sci 8:1022–1042
Motsara MR, Roy RN (2008) Guide to laboratory establishment for plant nutrient analysis. FAO
fertilizer and plant nutrition bulletin 19
Mowo JG, Floor J, Kaihura FBS, Magoggo JP (1993) Review of fertilizer recommendations in
Tanzania: Part 2, Revised fertilizer recommendations for Tanzania. Soil Fertility Report No. 6.
National Soil Service, ARI–Mlingano, Tanga, Tanzania
Nandini S, Chellamuthu V (2004) Relative performance of cotton cultivars under sole and intercropping situations in the coastal region of Karaikal. In: Proceeding of International Symposium
on Strategies for Sustainable Cotton Production-A Global Vision 2. Universty of Agricultural
Sciences, Karnataka, India. pp 235–237
Nelson L, Giles J, MacIlwain C, Gewin V (2004) Organic frequently asked questions (FAQs).
Nature 428:796–798
Nelson DW, Sommers LE (1982) Total carbon, organic carbon, and organic matter. In: Page AL,
Miller RH, Keeney DR, Baker DE, Roscoe E, Ellis J, Rhodes JD (eds) Methods of soil analysis.
Part 2. Chemical and Microbiological Properties. 2nd edn. Agronomy Monograph 9.2. ASA
and SSSA, Madison, WI. pp 539–581
OECD (2008) Consensus Document on the Biology of Cotton (Gossypium spp.). OECD Series
on Harmonisation of Regulatory Oversight in Biotechnology Paris, OECD. ENV/JM/
MONO(2008)38 No. 45: 64
Okalebo JR, Gathua KW, Woomer PL (2002) Laboratory methods of soil and plant analysis a
working manual, 2nd edn. TSBF-CIAT and SACRED Africa, Nairobi
Olsen SR, Sommers LE (1982) Phosphorous. In: Page AL, Miller RH, Keeney DR, Baker
DE, Roscoe E, Ellis J, Rhodes JD (eds) Methods of soil analysis. Part 2. Chemical and
T. N. Bwana et al.