Effect Of Irrigation Frequency Research Articles

Assessing Effect of Irrigation Frequency on Evaporation and Transpiration in Vineyards Using SIMDualKc Simulation Model with Measured Wet Fraction

Abstract: Irrigation efficiency is important for the environment and the economy. SIMDualKc has been effectively used to calculate evaporation and transpiration separately in vineyards for different irrigation strategies, but not to analyze the impact of irrigation frequency. This study was conducted for the in-field adjustment of the soil wetted fraction (wf) with a time domain reflectometry (TDR) sensor as a function of different irrigation frequency treatments (T03, T07, and T15 with irrigation every 3, 7, and 15 days, respectively). Evaporation and transpiration values were estimated separately with the SIMDualKc model for different irrigation frequencies with the adjusted wf, comparing them with vineyard field measurements and analyzing the effect of different irrigation frequencies on vineyard yield. The wf in T15 was higher than that in T07, which in turn was higher than that in T03. SIMDualKc indicates the most unfavorable treatment to be the T07, with higher evaporation and lower transpiration than T15 and T03, while T15 had higher evaporation and lower transpiration than T03. Although stomatic conductance also indicates the most unfavorable case to be T07, no clear differences were found between T03 and T15. No statistically significant differences were obtained in yield. The results indicate that the differences observed between irrigation frequencies are not reflected in yield but do show up in water use efficiency.

Effects of irrigation frequency on growth and yields of <i>Taraxacum kok-saghyz</i> Rodin

Taraxacum kok-saghyz (TKS) is one of the most promising rubber plants in the world. The question of how irrigation affects its yields and biochemical composition has not yet been studied well. The effects of irrigation frequency on the growth and yield of Taraxacum kok-saghyz were analyzed. According to the obtained results, it was established that an increase in irrigation frequency (extension of the watering interval) gradually decreased TKS rubber and total sugar yields. With the soil water content increasing from 22.8 to 38.9%, TKS rubber and sugar yields were changing in line with a cubic polynomial equation. Regular watering once every 6 days maintains soil moisture at a level above 28.0%, which makes it possible to increase the yield of Taraxacum kok-saghyz while enhancing the water-use efficiency under the conditions of Northeastern China (Harbin).

Soil legacies of tree species richness in a young plantation do not modulate tree seedling response to watering regime.

Trees have a strong and species-specific influence on biotic and abiotic properties of the soil. Even after the vegetation is removed, the effect can persist to form so-called soil legacies. We investigated the effects of soil legacies of tree species richness on the emergence and growth of tree seedlings, and how these legacy effects modulate the seedling responses to irrigation frequency. We used a 9-year-old tree plantation on former agricultural land in Belgium, which is part of a biodiversity-ecosystem functioning experiment (FORBIO). Soil originating from monocultures and four-species plots, with different species combinations, was translocated to a greenhouse. Five tree species (Betula pendula, Fagus sylvatica, Pinus sylvestris, Quercus robur, and Tilia cordata) were sown and grown for one growing season in these soils. We performed a watering treatment (low and high irrigation frequency) to measure any potential interaction effects between the soil legacies and irrigation frequency. There was no evidence for soil legacy effects of species richness on plant performance or their response to the irrigation frequency. However, the effect of irrigation frequency was dependent on species identity of the tree seedlings. Despite the lack of clear legacy effects, performance measures did show correlated responses that are likely due to species composition effects. We ascribe these patterns to the young age of the forest and the agricultural past land use. At this early stage in forest development, the land-use history likely has a more important role in shaping soil characteristics that affect plant growth and their response to drought, than species diversity.

Effect of Irrigation Frequencies and Foliar Application of Zinc and Boron on Growth and Yield of Yellow Sarson (Brassica rapa)

A field experiment was carried out during the winter (Rabi) season of 2021-22 on sandy loam soil at C.S. Azad University of Agriculture & Technology, Kanpur (U.P.) to study the Growth, yield of Yellow Sarson (Brassica rapa) influenced by different irrigation frequencies and foliar application of micronutrients (Zinc and Boron). Three irrigation (main plot) and four micronutrients level (sub plot) treatments were tested with "Split Plot Design" to know the influence of irrigation frequencies and micronutrients level on Yellow Sarson. To assess the effect of irrigation frequencies on yellow sarson, the treatment included IR1(one irrigation at 30 DAS), IR2(two irrigations at 30 and 55 DAS) and IR3 (three irrigations at 30 DAS, 55 DAS and 90 DAS) and to assess the effect of micronutrients level, the treatments were F0 (control), F1(0.5% zinc at 30-35 and 40-45 DAS) and F2(0.2% boron at 30-35 and 40-45 DAS) and F3(0.5% zinc+0.2% boron at 30-35 and 40-45 DAS). Treatment IR3 was found to be significantly superior to IR2 and IR1 treatments. The maximum seed yield was with the three irrigation frequencies IR3 (30+55+90 DAS) which were higher by 10.56 and 37.23 per cent than IR2 and IR1 treatments respectively. Regarding micronutrients the maximum seed yield was obtained in F3 treatment which was higher by 8.21, 14.42 and 21.78 percent than F2, F1 and F0 treatments in a relative manner. The maximum seed yield was obtained with IR3 X F3 interaction which was higher by 21.70, 13.20 and 7.92 per cent than then IR3F0, IR3F1, and IR3F2 treatment combination.

Effect of Different Watering Regimes on Morphological Parameters of Cashew Grafted Genotypes

Water stress has a strong influence on the physiological functions of tree crops which adversely affects the growth and yield of tree plants. Drought and soil fertility are the major factors that influence seedling survival and growth in arid areas, thus it is of paramount importance to establish optimum water requirements for tree seedlings in order to promote growth. In line with this, an investigation was carried out to assess early growth behaviours of Anacardium occidentale when exposed to varied watering intervals in the greenhouse. Two month old grafted seedlings were used for the study in 1.08 liter plastic pots containing 2 kg of potting soil. Seedlings were exposed to five different watering intervals (every two days, every four days, every six days, every eight days and ten days) and 80 mL of water was administered per each seedling based on the watering frequency for two months. Six seedlings were allocated per watering frequency and replicated 4 times in a Split-plot design. The result revealed a significant effect of irrigation frequency on seedlings growth of Anacardium occidentale where seedlings that received water every two days and every four days produced highest growth in the variables measured. Administering 80 mL of water per seedling every two days and every four days improved growth of A. occidentale in the nursery.

EFFECT OF IRRIGATION FREQUENCY ON GROWTH AND YIELD OF SOYBEAN

A field experiment was conducted at the research field of HSTU, Dinajpur during November 2019 to March 2020 to find out the effect of irrigation frequency on the growth and yield of Soybean (Glycine max L.) cv. BARI Soybean-6. The experiment was carried out with a RCBD with four replications of irrigation treatments viz, I0= no irrigation (control), I1= one time at 20 days after sowing (DAS), I2= two times (20 and 40 DAS), I3= three times (20, 40, and 60 DAS). At 105 DAS the highest plant height (52.53 cm) was found from I2 treatment and the shortest plant (45.82 cm) from I0 treatment. The highest (5.91) leaf area index was obtained from the treatment of three irrigation (I3) at 90 DAS and the lowest (5.1) leaf area index from the control (I0). At the 90 DAS highest nodule number (9.208) and the lowest nodule number was (6.459) recorded from I3 and I0, respectively. The highest (90.09 g) fresh weight was obtained from the treatment I2 at 90 DAS and the lowest (65.64 g) was recorded in I0. I3 produced the highest amount of dry matter of (29.50 g) and the lowest amount of dry matter production at harvest (20.67 g) in I0 treatment. The highest seed yield was observed from I2 (1.638 t ha-1 ) which was statistically similar with I3 whereas, the lowest obtained from I0 (1.075 t ha-1 ). The highest small stover yield was obtained from I3 (1.759 t ha-1 ) which is statistically similar to I2 (1.754 t ha-1 ) whereas the lowest was observed from I0 (1.540 t ha-1 ) which was statistically similar to I1 (1.566 t ha-1 ). The highest biological yield was found from I2 (3.425 t ha-1 ) which is statistically similar to I3 and the lowest was obtained from I0 (2.56 t ha-1 ). The maximum harvest index was found from I2 (47.71 %) and the minimum was obtained from I0 (40.81 %). I2 treatment showed more significant results than the other treatment I0, I1 and I3. So, two times irrigation showed significant effect showed the highest yield of 1.638 t ha-1.

Effect of irrigation frequency and selenium fertilization on the vegetative growth and biomass yield of Moringa oleifera and Moringa peregrina

To maximize the production value of Moringa species, there is a need to understand the morphological effect of irrigation frequency and Se fertilizer levels on Moringa species' growth and development. Hence, the aim of this trial was to determine the combined effect of irrigation frequency and Selenium (Se) fertilizer levels on the growth of Moringa oleifera (M. oleifera) and Moringa peregrina (M. peregrina) in the central region of the Kingdom of Saudi Arabia. A split-plot arrangement was used, where the treatments were arranged in a Completely Randomized Block Design (CRBD) with three replicates, as the study included two plant species (M. oleifera and M. peregrina), four irrigation frequencies (7, 10, 15, and 20 days), and three Se levels (0.0, 12.5 and 25 mg/L foliar spray). M. peregrina showed slow emergence and plant establishment as compared to M. oleifera. The results indicated that plant height, leaves and stems fresh weight increased with the increase in Se level, and were highest when the two plant species were irrigated every 10 days which surpassed all other irrigation frequencies. The findings of this research study indicated that the two Moringa species, particularly M. oleifera could successfully be grown using drip irrigation at a 10-days irrigation frequency.

Características de fruto de melão cantaloupe em ambiente protegido sob frequências de irrigação e volumes de substrato

ABSTRACT The objective of this study was to evaluate the effect of irrigation frequencies and substrate volumes on fruit mass, fruit quality and water use efficiency of cantaloupe melon in protected environment. The study was conducted at the Federal University of Rondonópolis, MT, Brazil, from February to August 2021, in randomized block design in a 3 × 4 factorial scheme with four replicates. The substrate volumes used in plastic pots were 5, 10 and 15 dm3 and the irrigation frequencies were once a day, twice a day, three times a day and once every other day. The characteristics evaluated were fruit mass, pulp thickness, water use efficiency, soluble solids content, and titratable acidity. The irrigation frequencies of once and three times a day showed the best performance for fruit mass and pulp thickness. The water use efficiency was higher for the frequency of three times a day. With the exception of titratable acidity, the substrate volumes of 10 and 15 dm3 showed the highest performances for all the variables evaluated. As for the soluble solids content, all fruits showed levels that classified them as extra fruits, of high quality and indicated for exportation.

Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil

Tifway 419 Bermudagrass is widely used on athletic fields, requiring irrigation and fertilization for its maintenance; however, little information is available for Bermudagrass management in tropical countries, as Brazil. Thus, this study aimed to evaluate the effect of irrigation frequency and nitrogen (N) fertilization on the development of Tifway 419 Bermudagrass. The experiment was carried in 2019, applying two irrigation frequencies (daily and every two days) and five N concentrations of 0, 42.19, 63.28, 105.47 and 126.56 kg N ha-1 divided into three 30-day increments. Photosynthetic pigments, grass height, accumulated dry mass, relative chlorophyll index, regeneration rate, root length, and dry mass of root, rhizome and stolon were analyzed. The best result was observed in between 63.28 and 105.47 kg N ha-1 (15% N) and irrigated every two days. The treatment maintains the green color of the grass. Maximum Bermudagrass regeneration rate was observed within this interval, and the root length and dry mass of roots, rhizomes and stolons were higher compared to the highest concentration.

Amplitude and frequency of wetting and drying cycles drive N2 and N2O emissions from a subtropical pasture

This study investigated the effects of irrigation frequency on N2 and N2O emissions from an intensively managed pasture in the subtropics. Irrigation volumes were estimated to replace evapotranspiration and were applied either once (low frequency) or split into four applications (high frequency). To test for legacy effects, a large rainfall event was simulated at the end of the experiment. Over 15 days, 7.9 ± 2.7 kg N2 + N2O-N ha−1 was emitted on average regardless of irrigation frequency, with N2O accounting for 25% of overall N2 + N2O. Repeated, small amounts of irrigation produced an equal amount of N2 + N2O losses as a single, large irrigation event. The increase in N2O emissions after the large rainfall event was smaller in the high-frequency treatment, shifting the N2O/(N2O + N2) ratio towards N2, indicating a treatment legacy effect. Cumulative losses of N2O and N2 did not differ between treatments, but higher CO2 emissions were observed in the high-frequency treatment. Our results suggest that the increase in microbial activity and related O2 consumption in response to small and repeated wetting events can offset the effects of increased soil gas diffusivity on denitrification, explaining the lack of treatment effect on cumulative N2O and N2 emissions and the abundance of N cycling marker genes. The observed legacy effect may be linked to increased mineralisation and subsequent increased dissolved organic carbon availability, suggesting that increased irrigation frequency can reduce the environmental impact (N2O), but not overall magnitude of N2O and N2 emissions from intensively managed pastures.

Green roofs sown with an annual plant mix attain high cover and functional diversity regardless of irrigation frequency

Annual plant species have great potential on green roofs as many are highly attractive, fast and cheap to establish via sowing and can provide rapid cover and growth, which is important for ecosystem service provision. While irrigation is essential for survival and growth of annual plants in seasonally hot or dry climates, it is also important to minimize water use as availability is often limited. Therefore, we evaluated how irrigation frequency affects plant cover, species abundance, richness and diversity, plant traits and functional diversity of a 16 species mixture of Australian annual species (4 g m−2 ~ 2100 seeds m−2) sown onto thirty 0.25 m2 green roof modules. The experiment was carried out in Melbourne, Australia, from January (summer) to July (winter) 2020. After a 2-month irrigated establishment phase (to ensure germination and seedling establishment), three irrigation treatments (2, 4 and 6 days between irrigation) were applied to the modules for three months. Plant cover was reduced at lower irrigation frequency (6 days), but ≥ 80% plant cover was achieved in all irrigation treatments. There was no effect of irrigation frequency on species abundance and richness; however, abundance, richness and diversity reduced over time, likely due to competition effects. Plant height and leaf area were also reduced by lower irrigation frequency. At the community level, functional diversity was unaffected by irrigation frequency. Our results indicate that green roofs sown with a mixture of annual plants can achieve good plant coverage, as recommended by green roof guidelines, and maintain high diversity when minimally irrigated in their first growing season.

The Effect of Irrigation Frequency and Amount on the Growth and Yield of Kale (Brassica Oleracea var. Acephala)

The Effect of Irrigation Frequency and Amount on the Growth and Yield of Kale (Brassica Oleracea var. Acephala)

The effects of irrigation frequency on water and heat regimes in different substrates and their mixtures: tomato as a case study

ISHS III International Symposium on Soilless Culture and Hydroponics: Innovation and Advanced Technology for Circular Horticulture The effects of irrigation frequency on water and heat regimes in different substrates and their mixtures: tomato as a case study

Irrigation has a higher impact on soil bacterial abundance, diversity and composition than nitrogen fertilization

The aim of this study was to assess the effects of irrigation frequency and nitrogen fertilization rate on the abundance, diversity, and composition of soil bacteria in winter wheat. Irrigation, but not nitrogen fertilization, significantly affected the bacterial alpha diversity index. Among the 50 phyla obtained in these treatments, Proteobacteria, Bacteroidetes, Actinobacteria, Acidobacteria, Gemmatimonadetes, and Firmicutes were the predominant phyla. The LEfSe analysis of different treatments indicated that irrigation had a stronger effect on soil bacteria community composition than nitrogen fertilization. Moreover, the soil pH, moisture, available phosphorus (AP), and available potassium (AK) significantly correlated with the relative abundance of dominant bacteria at the phylum, genus, and operational taxonomic unit (OTU) levels. Overall, after three years of irrigation and fertilization treatments, the effect of irrigation on soil bacteria abundance, diversity, and composition of winter wheat was stronger than that of nitrogen fertilization, highlighting the importance of water availability for bacteria communities in semi-arid ecosystems. Inorganic and organic fertilizers should be applied in rotation.

Effect of Drip Irrigation Frequency, N-Fertilization, and Mulching on Yield, Nitrogen, and Water Use Efficiencies of Cucumber (Cucumis sativus L.) in Ikole-Ekiti, Nigeria

Soil moisture conservation, proper irrigation scheduling and nutrient management are crucial for sustainable cucumber production. A field experiment was set up over two years (2018 and 2019) to investigate the effects of irrigation frequency, black polyethylene mulching, and nitrogen fertilization on cucumber yield, water use efficiency (WUE) and nutrient use efficiency (NUE) at Ikole-Ekiti, Nigeria. The experiment was a 3 x 2 x 2 factorial in a randomized complete block design (RCBD) with a split-plot arrangement and the main plot as drip irrigation frequency: twice per week (I4), three times per week (I5), and four times per week (I6), while the sub-plots were nitrogen fertilization; (no fertilizer, N0 and 180 kg/ha urea, N180) and mulching (no mulch, NM and mulch, M). The highest yield (8.39 and 8.51 t/ha) with the best WUE was obtained from treatment I4MF (F, fertilization), while the lowest (5.81 and 5.79 t/ha) was obtained from I6MF for the respective years. The combination of variables significantly (P<0.05) influenced cucumber yield, WUE, and NUE, and significant correlations were obtained (r=0.87** and 0.85**) between WUE and fruit yield for the study years. The treatment I4MF therefore, could successfully be adopted to reduce water and fertilizer application for improved cucumber yield in the field.

Root characteristics of spring wheat under drip irrigation and their relationship with aboveground biomass and yield

The objectives of this two-year field experiment were (1) to study the effect of irrigation frequency and irrigation amount on the root characteristics of drip-irrigated spring wheat (Triticum aestivum L.) and (2) to determine the relationship between these root characteristics and aboveground biomass and yield. A split-plot design was used with two wheat cultivars (Xinchun 6 and Xinchun 22). The irrigation treatments consisted of three irrigation intervals (D1, 13 d; D2, 10 d; and D3, 7 d) and three water amounts (W1, 3750 m3/ha; W2, 6000 m3/ha; and W3, 8250 m3/ha). The results showed that root length density (RLD) and root weight density (RWD) were greater at 0–20 cm than at 20–40 cm at flowering. The RLD was greater in D1 and D2 than in D3 in the shallow soil layer and did not differ among the treatments with different irrigation frequencies in deep soil. The RLD at the 0–20 cm depth of W3 was 17.9% greater than that of W2 and 53.8% greater than that of W1, and the RLD trend was opposite at the 20–40 cm depth. The root–shoot ratio was significantly higher in D2 than in the other treatment, whereas the RLD, RWD, leaf Pn and LAI were significantly greater in D3. Leaf Pn and LAI both increased as the irrigation amount increased. Regression analysis showed a natural logarithmic relationship between RWD and aboveground biomass (R2 > 0.60, P < 0.05) and binomial relationships of the RWD at 0–20 cm depth (R2 = 0.43, P < 0.05) and the RLD at 20–40 cm depth (R2 = 0.34, P < 0.05) with grain yield. We found that with the optimum irrigation amount (W2), increasing drip irrigation frequency can increase wheat root length and root weight and aboveground biomass accumulation, thereby improving yield and water use efficiency.

EVALUATION OF HYDROPONIC FODDER PERFORMANCE OF DIFFERENT VARIETIES OF SORGHUM

The hydroponic fodder yield performance evaluation of different varities of sorghum was conducted in green house of Wollega University.. Three experiments were conducted. The first was to observe effects of irrigation frequency. The second one was undertaken to evaluate four sorghum varieties (Lalo, Chemeda, Gamadi and Dano) on fodder yield, yield related components and nutritive values. The third experiment was done to determine the appropriate date of harvest for biomass yield and agronomic traits. Complete randomized design (CRD) was employed to conduct the experiment with three replications. The results showed that there was no significant difference (p&gt;0.05) between treatments on Dry matter yield (t/ha), Leaf Weight (t/ha), Root weight (t/ha) and Plant height (cm) as effect of frequency of watering at 2hr, 3hr and 4hr interval but, significant difference (p&lt;0.05) among varieties of sorghums as an effect of frequency of irrigation on Fresh yield(t/ha), Plant height (cm) and leaf to root ratio (LRR%).The lowest average fresh yields were harvested at 7th days after planting and consistently increased until 17th days of planting. The highest plant heights were observed at 17 days while the lowest was observed at 7th days of harvesting. Except for dry matter (DM), Ash and crude protein (CP), there were significant differences (P&lt;0.05) in neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL) and in vitro dry matter digestibility contents of the sorghum varieties. The Sorghum variety, Gamadi contained the highest CP (13.29%) and lowest Acid detergent lignin contents. The Sorghum variety, Chemeda showed best in vitro DM digestibility (73.24%). Harvesting hydroponic sorghum at 17 days after planting gave the best biomass yield (t/ha), LRR and Plant height (cm); showing the increase in biomass as time of harvesting increases. Among the tested varieties of sorghum a variety, Dano best for biomass yield among the others.

Irrigation frequency and soil type influence germination and early growth of quinoa ( Chenopodium quinoa Willd).

Abstract The adoption of quinoa as a potential food crop in semi-arid Zimbabwe is threatened by poor seed establishment. A 4 x 3 factorial experiment arranged in a completely randomised design (CRD) was carried out to establish the effects of irrigation frequencies and different soil types on germination and early growth of quinoa. Three soil types (sand, loam, and clay) and four irrigation frequencies (after every 1, 2, 3, and 4 days) were used. Measurements taken included days to 50% emergence, germination percentage, mean germination time, germination rate index, coefficient velocity of germination, seedling height, final crop stand, and root density. Analysis of variance (ANOVA) was done using GenStat 18th Edition and mean separation was done using the Least Significant Difference (LSD) at a 5% significance level. There was an interaction between irrigation frequency and soil type on days to 50% emergence (p&lt;0.05), germination percentage (p&lt;0.05), germination rate index (p&lt;0.05), seedling height (p&lt;0.05), root length density (p&lt;0.05), seedling crop stand (p&lt;0.05). Sandy soil irrigated on 1-day intervals recorded the highest germination percentage (96.7%), while clay irrigated on 3-day intervals recorded the lowest (41.7%) final germination percentage respectively. Seeds planted in sand and clay recorded the shortest (3.25) and longest (4.5) mean germination time (days) respectively. Loamy and sandy soils irrigated on 3-day intervals and 1-day intervals recorded the lowest (29.4%) and highest (70.4%) germination rate index respectively. Loam soil irrigated on 1-day and 4-day intervals recorded the highest (16.37 cm) and shortest (9.3 cm) seedling height. Loam soil irrigated on 2-day and sandy soil irrigated on 3-day intervals recorded the lowest (3.07 cm/cm3) and the highest (21.23 cm/cm 3 ) root length densities respectively. Sand irrigated on 1-day intervals recorded the highest (85%) crop stand. Findings concluded and recommended planting and frequently irrigating quinoa in sandy soils for better crop establishment.

Effects of Irrigation Frequency and Nutrient Solution Volume on the Growth and Yield of Ginger (Zingiber Officinale Roscoe) Cultivated Using Soilless Culture System

Effects of Irrigation Frequency and Nutrient Solution Volume on the Growth and Yield of Ginger (Zingiber Officinale Roscoe) Cultivated Using Soilless Culture System

Forage potentials of two cowpea (Vigna unguiculata L. Walp) varieties as influenced by varying irrigation frequencies and phosphorus application rates in Zaria

In Nigeria, the dietary energy and protein obtained from forages, particularly in the dry season, are generally too low to meet the nutrient requirements of ruminant livestock. Therefore, there is a clear need for alternative means of supplementing the year-round forage shortfall for livestock to improve productivity. A field experiment was conducted to evaluate the effects of irrigation frequencies and phosphorus application rates on forage quality of two cowpea varieties during dry season. The experiment was laid out in a 2×3×3 factorial arrangement in a split plot design with three replications. Treatments consisted of two cowpea varieties (SAMPEA 14 and 15), three irrigation frequencies (5, 10 and 15-days) and three phosphorus (P) rates (0, 20 and 40kg/ha), respectively. Chemical and mineral compositions were recorded. Results indicated that forage quality of the two cowpea varieties were affected (P&lt;0.05) by some of the treatments during the two-year trial and the mean. Crude protein (CP) and crude fibre (CF) of forages were higher (P&lt;0.05) in treatment with 20 kgP/ha and 40 kgP/ha compared to the control. SAMPEA 14 forage resulted in significantly higher (P&lt;0.05) mean CP of 16.91% compared to SAMPEA 15 with 15.74%. The CP of SAMPEA 14 forage increased by 6.91% compared to SAMPEA 15 forage. Mean P increased by 11% with SAMPEA 14 comapred to SAMPEA 15. Calcium and potassium were higher (P&lt;0.05) in treatment with 5 days irrigation frequencies compared to 15 days irrigation interval. Phosphorus application rates showed an increasing trend (P&lt;0.05) in P determined with 40 kgP/ha application level in 2018 dry season. It is therefore, concluded that, farmers should irrigate SAMPEA 14 using the 5-day irrigation frequency in combination with 20 kgP/ha of phosphorus application rate for optimum fodder quality.