134
Rice trials were planted twice per year at Dihombo and Mkula in August and March
and harvested in December and June, respectively. At Dakawa, rice was planted only
once in March and harvested in July. Rice in all trials was planted at 20 cm by 20 cm.
2.3 Crop Harvesting and Crop Residues Chemical Analysis
We demarcated every treatment plot on each farm into three sub-plots for each crop
harvesting period. Two sampling units were then located at the middle of each subplot, hence making a total of six sampling units per treatment. Maize sampling plot
was a 4-m-long line, and rice was 1 m
2
. The farmers continued to harvest their crops
Table 2 Inputs application for maize crop (treatments)
Activity
Input
When
Yara/SUA/Syngenta
(YSS)
Farmers’ practice (FP)
Seed treatment
Apron star at 10 g/4 kg
seed
No seed treatment
Seed preparation
during planting
1st fertiliser
application
YaraMila CEREAL
@350 kg/ha
(DAP) @ 62 kg/ha
During planting
Pre-emergence
herbicide application
Primagram gold 3 lts/ha No application. But first
weeding third week after
planting
Just after planting
1st insecticide
application
Karate 5 EC for control
of stalk borers
@395mls/acre
Karate 5 EC for control
of stalk borers @395mls/
ha
3rd week after
planting
If the symptom of
attack occurs
2nd fertiliser
application. Sprayed
on the leaves
YaraVita TRACEL™
BZ @ 2 kg/ha
No application
3rd week after
planting
3rd & 4th fertiliser
application
200 kg/ha YaraMila
CEREAL
Application of urea
fertiliser
@ 123 kg/ha
5th week after
planting (knee
height)
4th fertiliser
application
52 kg/ha YaraMila JAVA No application
7th week after
planting
(tasselling)
2nd insecticide
application
Karate 5 EC @ 395mls/
ha
No application
8th week after
planting
Herbicide application Gramoxone @ 1240mls/
ha
Weeding by use of draft
animals
10th week after
planting
Fertiliser composition:
1. YaraMila CEREAL = 23 N – 10P – 5 K+ 2MgO + 3S + 0.3Zn
2. TRACEL BZ = 5 N – 7.5 P 2 O 5− 5 K 2 O + 5 mg + 5S + 5Zn + 5Bo + 0.1Cu + 0.1Fe + 0.1Mn +
0.1Mo
3. YaraMila JAVA = 22 N – 6P –12 K + 2CaO + 1MgO + 3S + 0.2B + 0.2Zn
4. DAP = 18% N – 46% P 2 O 5
5. Urea = 46% N
E. J. Mtengeti et al.
Rice trials were planted twice per year at Dihombo and Mkula in August and March
and harvested in December and June, respectively. At Dakawa, rice was planted only
once in March and harvested in July. Rice in all trials was planted at 20 cm by 20 cm.
2.3 Crop Harvesting and Crop Residues Chemical Analysis
We demarcated every treatment plot on each farm into three sub-plots for each crop
harvesting period. Two sampling units were then located at the middle of each subplot, hence making a total of six sampling units per treatment. Maize sampling plot
was a 4-m-long line, and rice was 1 m
2
. The farmers continued to harvest their crops
Table 2 Inputs application for maize crop (treatments)
Activity
Input
When
Yara/SUA/Syngenta
(YSS)
Farmers’ practice (FP)
Seed treatment
Apron star at 10 g/4 kg
seed
No seed treatment
Seed preparation
during planting
1st fertiliser
application
YaraMila CEREAL
@350 kg/ha
(DAP) @ 62 kg/ha
During planting
Pre-emergence
herbicide application
Primagram gold 3 lts/ha No application. But first
weeding third week after
planting
Just after planting
1st insecticide
application
Karate 5 EC for control
of stalk borers
@395mls/acre
Karate 5 EC for control
of stalk borers @395mls/
ha
3rd week after
planting
If the symptom of
attack occurs
2nd fertiliser
application. Sprayed
on the leaves
YaraVita TRACEL™
BZ @ 2 kg/ha
No application
3rd week after
planting
3rd & 4th fertiliser
application
200 kg/ha YaraMila
CEREAL
Application of urea
fertiliser
@ 123 kg/ha
5th week after
planting (knee
height)
4th fertiliser
application
52 kg/ha YaraMila JAVA No application
7th week after
planting
(tasselling)
2nd insecticide
application
Karate 5 EC @ 395mls/
ha
No application
8th week after
planting
Herbicide application Gramoxone @ 1240mls/
ha
Weeding by use of draft
animals
10th week after
planting
Fertiliser composition:
1. YaraMila CEREAL = 23 N – 10P – 5 K+ 2MgO + 3S + 0.3Zn
2. TRACEL BZ = 5 N – 7.5 P 2 O 5− 5 K 2 O + 5 mg + 5S + 5Zn + 5Bo + 0.1Cu + 0.1Fe + 0.1Mn +
0.1Mo
3. YaraMila JAVA = 22 N – 6P –12 K + 2CaO + 1MgO + 3S + 0.2B + 0.2Zn
4. DAP = 18% N – 46% P 2 O 5
5. Urea = 46% N
E. J. Mtengeti et al.