NPK Rates Research Articles

Effect of Mineral Fertilization with Some Growth Regulators on Growth of Magnolia grandiflora L. Seedling. I. Effect on Vegetative Growth

This study was carried out at the Experimental Station and Laboratory of Vegetable& Floriculture department, Fac. of Agriculture, Mansoura University during the two successive seasons of 2011/ 2012 and 2012/ 2013.It aimed to study the effect of monthly treatments of NPK rates (0, 1.5, 3.0, 4.5 g /plant) and foliar spray with GA3 at 100 ppm and yeast at 5 g /l either alone or in combination from the 1st of April to the 1st of September on growth of containerized magnolia (Magnolia grandiflora L.) tree transplants. The results showed that GA3 spray was the most effective compound to improving all growth parameters of magnolia transplants, followed by yeast spray, while mineral fertilization was the third in order. Among fertilizer treatments, the medium fertilizer level 3g/pot was optimum for growth of magnolia transplants. Monthly fertilization with Hyper feed NPK (19:19:19) fertilizer at 3 g/pot combined with foliar spray of both GA3 at 100 ppm and yeast at 5 g/l resulted in the highest significant values for plant height, stem diameter, number of leaves per plant, leaf area and fresh and dry weights of plant, fresh and dry weights of magnolia transplants. Data also showed that the previously mentioned combination resulted in the highest contents of N, P, K, carbohydrates, and chlorophyll in magnolia leaves.

Site‐Specific Nutrient Management for Cassava in Southern India

Cassava (Manihot esculenta Crantz.) yield in the major growing environments of India has been stagnating despite the development of high yielding varieties and increasing use of chemical fertilizers. On farm experiments were conducted to evaluate the performance of site‐specific nutrient management (SSNM). Field and crop specific NPK rates were calculated using quantitative evaluation of fertility of tropical soils (QUEFTS) model. The average 2‐yr yield advantage of SSNM over farmer fertilizer practice (FFP) was 7 Mg ha−1. The N agronomic efficiency increase of SSNM over FFP was 32 kg kg−1, the N recovery efficiency of SSNM was 0.14 kg kg−1 greater than that of FFP and the N physiological efficiency of SSNM was 54 kg kg−1 greater than that of FFP, whereas the partial factor productivity of SSNM was 148 kg less than that of FFP. Use of SSNM led to a reduction of fertilizer costs by an average of US$10 ha−1 crop−1 and an increase in gross return above fertilizer costs by $254 ha−1 crop−1 compared with FFP. Zone NPK recommendation maps and customized fertilizer blends were also developed. The results showed the potential of SSNM in significantly increasing yield and nutrient use efficiency of cassava. Future research is needed to validate the customized fertilizer blends and fine tune zone NPK recommendation maps which will help reduce the need for field specific modeling and intensive crop monitoring.

Tanggap Tiga Varietas Padi Sawah terhadap Kombinasi Pemupukan dengan Sistem Pembenaman Jerami

<p>ABSTRACT</p><p>Degradation of soil fertility due to inaccurate application of fertilizer become one of the factors causing the stagnant rice productivity improvement in Indonesia. Straw incorporation, organic fertilizers and biofertilizers applications potentially reduces a rates of inorganic fertilizers and improves soil fertility. The aim of this study was to evaluate growth and yield of 3 lowland rice varieties (high yielding variety, new plant type, and local variety) in response to reduce NPK rates with straw incorporation, organic fertilizer, and biofertilizer in 7th planting season. The research was conducted at rice field in Karawang, West Java, from April-August 2013. The research was arranged in split plot randomized block design with 3 replications. The main plot was fertilizer application consisted of 10 treatments (combination of organic and inorganic fertilizers), while the sub plot was rice varieties (Ciherang, IPB 3S, and Mentik Wangi). The application of inorganic fertilizer, 400 kg NPK 30-6-8 ha-1, was control treatment. Plot size was 6.5 m x 10 m, with a double row spacing (25 cm x 15 cm x 50 cm). The result showed that growth of the three varieties was not significantly different so as the yield at 50% reduced NPK rate with incorporation of straw, organic fertilizer and biofertilizer. Adding of solid and liquid organic fertilizer, and biofertilizers on treatment of straw incorporation + 50% NPK rate was unnecessary due to insignificant yield increase.</p><p>Keywords: Ciherang, fertilizer, IPB 3S, local variety, Mentik Wangi, new plant type</p>

Variety and NPK Rate Effect on Growth and Yield of Cabbage (Brassica oleracea L.) in the Bediese Soil Series at Asante Mampong in Ghana

Variety and NPK Rate Effect on Growth and Yield of Cabbage (Brassica oleracea L.) in the Bediese Soil Series at Asante Mampong in Ghana

Effect of Different NPK Rates on Rice Yield in Pratesh Lang Soil Type in Cambodia

Effect of Different NPK Rates on Rice Yield in Pratesh Lang Soil Type in Cambodia

Adubação, produtividade e rentabilidade da rotação entre soja e milho em solo com fertilidade construída

Resumo:O objetivo deste trabalho foi avaliar os efeitos da adubação sobre os teores de P e K, em solo com fertilidade construída, e identificar as doses de N, P e K necessárias para obtenção de maior rentabilidade com a rotação entre soja e milho nesses solos. O experimento foi realizado durante três safras, em propriedade com alto investimento tecnológico, em Latossolo Vermelho-Amarelo argiloso de Cerrado, com elevada fertilidade. Utilizou-se o delineamento de blocos ao acaso, com parcelas subdividas e três repetições. Os tratamentos consistiram de 0, 50, 100 e 150% das doses de fertilizantes NPK recomendadas na semeadura (parcelas) e das doses de KCl (soja) e N (milho) em cobertura (subparcelas). Mesmo após a colheita das três safras, os teores de P (Mehlich-1) se mantiveram inalterados no solo sem adubação. Além disso, não houve decréscimo na produtividade da soja na ausência de adubação. O milho, no entanto, foi mais sensível à redução de adubação, com o máximo retorno econômico obtido com 312 kg ha-1 do adubo formulado 10-32-10, e 263 kg ha-1 de ureia em cobertura. Solos com fertilidade construída demandam ajustes de manejo de adubação, para o uso eficiente dos fertilizantes em lavouras com alto investimento tecnológico.

Vplyv aplikovaného dusíka na odber vybraných makroelementov a obsah vitamínu C pri pekinskej kapuste

Pot trial was aimed to investigate an effect of fertilizer nitrogen on the content of vitamin C and offtake of certain macroelements by Brassica pekinensis. The experiment was realized in the years 2000 and 2001 in pots containing 10 kg of loamy brownsoil. Optimalization of NPK rates contributed to the increase of N, P, K, Mg and S offtake by the yield of final product in comparison with unfertilized control. The most marked increase offtake of nitrogen (by 14,6%) was obtained when fertilizer N was applied in the diveded form (80% N prior to seeding + 20% N in initial phase of heads formation, nitrogen applied as DAM 390). Positive effect of full NPK nutrition on the vitamin C content was determined. The highest content of vitamin C (629.0 mg.kg-1 of fresh mass) was determined in treatment where nitrogen was applied in the divided rate.

Long-term mineral fertiliser use and maize residue incorporation do not compensate for carbon and nutrient losses from a Ferralsol under continuous maize–cotton cropping

It has been repeatedly argued that mineral fertiliser application combined with in situ retention of crop residue biomass can sustain long-term productivity of West African soils. Using 20-year experimental data from southern Togo, a biannual rainfall area, we analysed the effect of two rates of mineral NPK fertiliser application to maize–cotton rotation on the long-term dynamics of soil C and nutrient contents, as compared with two control treatments. Mineral fertiliser treatments consisted of application to both maize (first season) and cotton (second season) the research-recommended NPK rates (Fertiliser-RR) and 1.5 times these rates (Fertiliser-1.5 RR). Control treatments consisted of cropping maize and cotton without fertiliser use (No-Fertiliser) and of double annual soil tillage (as done for planted treatments) without planting a crop (Tillage-NoCrop). Maize residue biomass was every year returned to the soil of crops planted treatments, whereas cotton stems were uprooted, piled and burnt on the experimental plots as done locally for phyto-sanitary reasons. Treatment effects were analysed through a long-term change in crop productivity, in soil C and nutrient contents. Our results indicate that productivity of maize and notably of cotton cannot be sustained in this Ferralsol without nutrient inputs. On average, maize yields without fertilisers decreased from 2tha−1 after woodland clearing to 0.5tha−1 after 10 years of cultivation, while cotton yields decreased from 1.5 to 0.5tha−1 only after 5 years. In spite of the need of mineral fertiliser use to sustain productivity of this soil, there was little justification to increase inputs of mineral fertiliser over the research recommended rate. Over 20-year experiment, both maize and cotton while received N, P and K inputs at the research-recommended rates produced virtually the same yields as when these rates were increased by 50%. Although C inputs to soil under RR and 1.5 RR were greater than in the No-Fertiliser control (nil for Tillage-NoCrop), and the N input was more favourable for 1.5RR, the rates in which contents of soil C and N decreased over time did not differ substantially between treatments. Soil available P decreased for all treatments, while exchangeable K concentration increased under RR and 1.5 RR and decreased in unfertilised treatments (No-Fertiliser and Tillage-NoCrop). In fertilised plots and in tillage no-planted plots, soil pH decreased more than in No-Fertiliser plots. A decline of soil pH was associated with a decline of exchangeable Ca and Mg, which were on average 20 and 40% higher in fertilised plots than in No-Fertiliser plots. We conclude that soil C and N decline in this Ferralsol was more determined by a change in soil conditions due to woodland clearance and continuous tillage than by the quantities of C or N inputs added annually.

EFFECT OF BOTH SOIL AND FOLIAR APPLICATION OF NPK ON RESPONSE OF CORN VARIETIES .

A field experiment was carried out at Gemiza (ARS), during 2012, 2013. The aim of the study was to evaluate the performance of S.C.167 and T.W.C 253 maize under the use of different rates of NPK, fertilizer and methodes of application soil application and foliar one. All the agriculture treatments were used as usual. A split split plot design was used. five traits were studied. Such traits were no. of kernels /rows, no. of rows /ear ,no. of kernels / ear, Grains weight /ear and yield/fed. The obtained results could be summarized as follows: - Main effects significantly affected most studied traits. - The most recommended independent factor treatments for superior grain yield/fed were SC.167 × SA 60% NPK ×SF40% NPK or T.W.G. SA 100% NPK × SF 40% NPK . - The first order interactions among the levels of the three studied factors seemed to be the most acceptable combinations for excellent grain yield/fed. - Significancey was completely absent as respect to second order interaction with all studied trait. Except only grain yield / fed. was significant .But the superior combination SC167 × SA 100% NPK × FA 80% NPK or T.W.C 353 ×SA 80% NPK × FA 40 % NPK .

INTERACTION EFFECT OF BOTH SOIL AND FOLIAR APPLICATION OF NPK ON RESPONSE OF CORN VARIETIES IN EGYPT AND MOROCCO

Two field experiments were carried out at Gemiza (ARS), during 2012, 2013. The aim of the study was to evaluate the performance of S.C.167 and T.W.C. 253 maize under the use of different rates of NPK. Fertilizer were tested cross (Cs) , soil application (SA) and foliar one (FA). All the agriculture treatments were used as usual. A split split plot design was used. five traits were studied. Such traits were distributed at ear length, ear diameter, ear height, cob. Weight, and shilling percentage . The obtained results could be summarized as follows : - Crosses, soil application and foliar application of NPK signifcantly affected most studied traites except ear height, cob. weight, and shilling percentage . - Significancey was completely absent as respect to first and second order interaction with all studied trait but the superior vlues were produced from combination (T.W.C. 253 × 80% NPK (S.A.)), (T.W.C. 253 × 80% NPK (F.A.)) and (80% NPK (S.A.) × 40% NPK (F.A.))

Effect of NPK and Bio-Fertilizers Rates on the Vegetative Growth and Oil Yield of Ocimum basillicum L. Plants

The present study was designed to investigate the response of Ocimum basilicum L. plants to four rates of NPK (0, 50, 75 and 100% of recommended) and four treatments of active dry yeast (ADY) as biofertilizer (0, 2, 4, and 6 g l-1) and their combinations. The recommended dose of NPK (100%) was 11.11, 7.41 and 3.70 g plant-1 of ammonium sulphate (20.5% N), calcium super phosphate (15.5 P2O5) and potassium sulphate (48.5% K2O), respectively. The experiment was carried out during the growing seasons of 2012 and 2013 at Agric. Research Station, Alex. Univ., Egypt. The result showed that 100% of NPK combined with ADY at 4 and/ or 6 g l-1 gave the highest value of vegetative growth characters (plant height, number of branches, number of leaves, leaf area and leaves dry weight) in the two cuts of the two seasons as well as the greatest content of total chlorophyll, oil percentage and linalool, eucalyptol percentage in the oil of basil leaves. The highest significant increase in the Estragol and trans-4-methoxycinamaldehyde percentage in the oil of basil leaves were obtained by using 50 or 75% dose of NPK in combination with 4g l-1 of ADY.

Effect of hydrogel, NPK and irrigation levels on yield, nutrient uptake and water use efficiency of wheat(Triticum aestivumL.)

Field experiments were conducted during rabi (winter) seasons of 2011–12 and 2012–13 at the Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh (India) to find out the effect of phenological stages based irrigation scheduling, super absorbent polymer (hydrogel) and NPK rates on wheat. Four irrigations given at CRI (23 DAS), tillering (44 DAS), boot leaf (83 DAS) and milking stage (105 DAS) recorded maximum grain yield, straw yield, NPK uptake and water use efficiency in wheat. The grain yield, nutrient uptake and water use efficiency were maximum when wheat crop was given 100% recommended NPK in combination with hydrogel at 5 kg/ha in the sandy loam soil of Varanasi.

EFFECT OF REMEDIAL AND AMENDMENTS USES ON SOME BOTANICAL CHARACTRISTICS AND YIELD OF PEA AND sunflower PLANTS Pisum sativum L. and Helianthus annus L.

Two field experiments were carried out at Sakha Experimental Station, Kafr El-Sheikh Governorate during the two growing seasons, of 2012 and 2013 The effects ofsewage sludge (SS), poultry manure (PM), processed town refuse (PTR), mixture of SS and PM,recommended rates of NPK, mineral fertilizers (RMF) without or with gypsum, or sulphur, on the certain Botanical characteristics and yield of pea plants were studied. In addition, the residual effects on the yield and its components of sunflower plants were investigated. Remedial andamendments were incorporated into the plowing soil (0-15 cm) before planting pea plants. The obtained data can be summarized as follows: 1-D.W and Seed index were markedly increased by increasing the biosolids application rate. The application of SS5 (without) agrochemicals, PM2 with gypsum and PM2 with sulphur produced the highest Dry weight. 2-Concentration of plastid pigments in the pea leaves were increased due to the application of (SS5) and sulphur . Addition of remedial with or without agrochemicals increased, N, P, K, Cu, Mn, Zn. Heavy metals, Cd, Pb and Ni contents of straw were also increased compared with the control but less than the toxic limits for these plants. 3-SS5, without; (SS+PM)3 and with gypsum and PM2 with sulphur increased seed yield if compared to control. The application of SS5 without agrochemicals, PM2 with gypsum and PM2 with sulphur produced the highest straw yield. The residual effects due to remedial and amendments treatments showed that:- 4-Plant height; D.W were increased due to pre-incorporated (SS+PM)3. Similarly, stem and head diameter recorded, highest values by PM2 gypsum and sulphur in a descending order. 5-Plastid pigments Macro, Micro and Heavy metals, were also increased. The highest values plastid pigments were obtained in sulphur-sewage sludge pre-treated soils at the high levels. At the same time N, P and K content of different sunflower plants organs were higher in SS5, (SS+PM)3 and PM2 respectively, in soil than those obtained in low rate of organic manure treatments. 6-The highest seed oil yield was obtained due to (PM2 and SS3) without application. It could be concluded that remedial and amendments, i.e, SS5, (without); PM2(with gypsum) and PM2 (with sulphur) have a significant influence on Botanical characteristics and yield of pea plants. Their residual effects extends to best botanical characteristics and yield of sunflower plantsunder the experimental condition.

Effect of Chimato Composts Made Using Optimal Blending Composition of T. diversifolia on Fertilizer Requirements and Maize Yield

A field experiment was conducted to determine amount of inorganic fertilizer saved by using chimato composts TD60 produced by blending 60% of Tithonia diversifolia with 40% maize stalks in maize production. In this experiment, 0 g, 100 g, 200 g and 400 g of TD60 were supplied per maize planting station in combination with 0%, 33%, 67% and 100% of recommended rates of NPK (23-21-0+4S) inorganic fertilizer. Maize growth parameters and yield were measured. Results showed that maize cob length, cob circumference, leaf length and maize grain mass in treatment supplemented with 200 g of TD60 combined with 33% of NPK were significantly different from those supplemented with lower quantities of chimato composts and were not significantly different from those supplemented with TD400 combined with 23-21-0+4S quantities of equal to or greater than 33% of the recommended rates. However, maize cob length and cob circumference were not significantly different in maize plants supplemented with 400 g and 200 g of TD60. Yield of maize were maximal in planting stations supplemented with 200 g and 400 g of TD60 combined with 67% and 33% of recommended rates of NPK respectively. It is concluded that application of 200 g and 400 g of TD60 combined with 67% and 33% of recommended rate of NPK respectively are likely to produce optimal growth parameters as well as optimal maize yield if recommended to smallholder farmers.

Farmer‐led maize biochar trials: Effect on crop yield and soil nutrients under conservation farming

AbstractIn extensive farmer‐led trials practicing conservation farming (CF) in three regions of Zambia (Mongu: sandy soils; Kaoma: sandy or loamy sand soils; Mkushi: sandy loam or loamy soils), we studied the effects of biochar made of maize cobs (0, 2, and 6 t ha−1corresponding to 0, 0.8, and 2.5% per basin) at different fertilizer rates of NPK and urea on crop yield of maize (Zea mays) and groundnuts (Arachis hypogaea). Conservation farming in this case combines minimum tillage (how basins), crop rotation and residue retention. For the first time, the effect of biochar onin situsoil nutrient supply rates [determined by buried Plant Root Simulator (PRS™) exchange resins] was studied, as well as the effects of biochar on elemental composition of maize. Effects of 0–10% (w:w) biochar addition on soil physical and soil chemical properties were determined in the laboratory. At all sites there was a consistent positive response in crop yield upon the addition of biochar. However, due to a great variability between farms there were no significant differences in absolute yields between the treatments. In the sandy soils at Mongu, relative yields (i.e., percentage yield with biochar relative to the same fertilizer rate without biochar) of maize grains and maize stover were significantly increased at recommended fertilizer rates (232 ± 60%) and at half the recommended rate (128 ± 6%), respectively. In addition, biochar significantly increased concentrations of K and P in maize stover.In situsoil nutrient supply rates as measured by PRS™‐probes were highly spatially variable with no consistent effects of the different treatments in the three regions. By contrast, the fraction of plant available water (Vol.‐%) significantly increased upon the addition of biochar in all three soils. The increase caused by 10% biochar addition was of factor 2.5 in Mongu (from 4.5% to 11.2%) and 1.2 in both Kaoma (from 14.7% to 18.2%) and Mkushi (from 18.2% to 22.7%). Cation exchange capacity, pH, and exchangeable K significantly increased upon the addition of 10% (w:w) biochar in all three regions with a subsequent increase in base saturation and decrease of available Al3+. Our findings suggest that the addition of biochar in combination with CF might have a positive impact on crop growth and that this positive effect is mainly caused by increases in plant‐available water and decreased available Al.

English

Two year experiment was conducted in the Teaching and Research Farm of Department of Crop Science, Faculty of Agriculture, University of Nigeria, Nsukka to: compare the effect of combined MSW and NPK fertilizer application on yield components, yield and proximate composition of maize. A 4 × 4 factorial experiment in Randomized Complete Block Design (RCBD) with three replications was used for the study. The two factors: MSW (0, 1000, 1500 and 2000 kg/ha) and NPK (20:10:10) (0, 100, 200 and 300 kg/ha) were combined to get 16 treatment combinations. Sole application of 2000 kg/ha of MSW and 300 kg/ha of NPK rates were observed to achieve the highest yield of maize in 2011 and 2012 seasons respectively among their treatment rates. Complementary application of MSW with NPK was significantly higher than either sole application with respect to plant attributes measured. Combination of 2000 kg/ha of MSW with 300 kg/ha of NPK had significantly higher effect than other interactions in both years and was found satisfactory to achieve the best yield performance and proximate composition of maize in the study.   Key words: Municipal solid waste, NPK, maize yield, yield components, proximate composition.

English

Two year experiment was conducted in the Teaching and Research Farm of Department of Crop Science, Faculty of Agriculture, University of Nigeria, Nsukka to: compare the effect of combined municipal solid waste (MSW) and NPK fertilizer application on yield components, yield and proximate composition of maize. A 4 × 4 factorial experiment in Randomized Complete Block Design (RCBD) with three replications was used for the study. The two factors: MSW (0, 1000, 1500 and 2000 kg/ha) and NPK (20:10:10) (0, 100, 200 and 300 kg/ha) were combined to get 16 treatment combinations. Sole application of 2000 kg/ha of MSW and 300 kg/ha of NPK rates were observed to achieve the highest yield of maize in 2011 and 2012 seasons respectively among their treatment rates. Complementary application of MSW with NPK was significantly higher than either sole application with respect to plant attributes measured. Combination of 2000 kg/ha of MSW with 300 kg/ha of NPK had significantly higher effect than other interactions in both years and was found satisfactory to achieve the best yield performance and proximate composition of maize in the study. Key words: Municipal solid waste, NPK, maize yield, yield components, proximate composition.

Soil ameliorants to improve soil chemical and microbial biomass properties in some South African soils

Rainfed field trials on effects of seed, foliar and soil amendments herein referred as industrially manufactured biological amendments (IMBAs) on selected soil chemical and microbial biomass properties were conducted from 2006/07through 2008/09 at four sites in South Africa under light and heavy-textured soils. The IMBAs were classified as growth boosters and partial or total replacements of conventional NPK fertiliser. The IMBAs were applied according to product recommendations in a randomised complete block design with four replications. An optimum conventional NPK rate at each site and untreated control were also included as check. Application of IMBAs with optimum recommended NPK fertiliser rate promoted acidity in soils compared to the IMBAs used as either partial or total replacements of conventional NPK fertiliser. The use of the different IMBA types significantly increased contents of organic C, available N and P only in light-textured soils than in the NPK check. The different IMBAs promoted higher microbial biomass-C immobilisation at 4-weeks after planting, while biomass-C mineralisation was predominant at flowering and crop harvest regardless of soil type. Farmers could apply any category of IMBAs to complement revitalisation of degraded South African soils and also minimise nutrient leaching due to synergetic effects. DOI: http://dx.doi.org/ 10.4038/jas.v9i2.6908 The Journal of Agricultural Sciences, 2014, vol.9, no2: p.58-68

YIELD AND YIELD ATTRIBUTES OF EXTRA-EARLY MAIZE (Zea mays L.) AS AFFECTED BY RATES OF NPK FERTILIZER SUCCEEDING CHILLI PEPPER (Capsicum frutescens) SUPPLIED WITH DIFFERENT RATES SHEEP MANURE

Field experiment was conducted in 2005 and 2006 to study response of extra-early maize variety (95TZEE-Y 1 ) to rates of NPK (0, 40:20:20, 80:40:40 and 120:60:60 kg N:P 2 O 5 :K 2 O ha -1 ) and residual FYM (0, 5, 10 and 15 t ha -1 applied to chilli pepper the previous season) in the semi-arid zone of Nigeria. Randomized complete block design with three replicates was used. Higher values for soil physical and chemical properties were obtained in plots supplied with manure the previous season with soil from 2006 experiment more fertile than for the first year, hence produced 21% more grain yield. All the applied NPK rates in 2005 and except 40:20:20 ha 1 in 2006 had resulted in early maize crop as compared to control. Husked and de-husked cob and 100-grain weights and grain yield/ha were higher at 120:60:60 kg NPK ha -1 . Maize grown in plot supplied with 15 t FYM ha 1 the previous year matured earlier. Cobs and 100-grain weights and grain yield were highest in plot supplied with 10 t FYM ha 1 . The 10t FYM ha -1 had 69% and 68% more grain yield than the control in 2005 and 2006, respectively. Highest maize yield was obtained at 120:60:60 kg NPK ha -1 or 10t FYM ha -1 . All the parameters measured significantly and positively related to each other when the two years data were combined.

Growth Rate and Yield of Two Tomato Varieties (Lycopersicon esculentumMill) under Green Manure and NPK Fertilizer Rate Samaru Northern Guinea Savanna

Field experiments were conducted in 2010-2011 and 2011-2012 dry seasons at the Research farm of the Institute for Agricultural Research, Samaru northern guinea savanna agro ecological zone of Nigeria to study growth rate and yield of tomato under green manure and NPK fertilizer rates. Treatment consisted of two tomato varieties (Roma VF and UC82B), four rates of NPK 15-15-15 fertilizer (0, 150, 300, and 450 kg ha−1), and three rates of green manure (0, 5, and 10 t ha−1), laid in a split-plot design with three replications. The variety and fertilizer constituted the main plot while green manure was allocated in subplot. Both varieties responded linearly in growth stages of 5 and 7 weeks after transplanting (WAT) on plant height, relative growth rate, and crop growth rate (CGR). However, UC82B proves superior over Roma VF on growth indices CGR at 5–7 WAT, net assimilation rate (NAR) at 7–9 WAT, and total fruit yield with 10.6% higher. Application of NPK fertilizer significantly increased growth such as plant height, crop dry weight, crop growth rate, and yield. Application between 250 and 280 kg ha−1NPK fertilizers was found efficient for total fruit yield.